2 * linux/drivers/video/amifb.c -- Amiga builtin chipset frame buffer device
4 * Copyright (C) 1995-2003 Geert Uytterhoeven
6 * with work by Roman Zippel
9 * This file is based on the Atari frame buffer device (atafb.c):
11 * Copyright (C) 1994 Martin Schaller
14 * with work by Andreas Schwab
17 * and on the original Amiga console driver (amicon.c):
19 * Copyright (C) 1993 Hamish Macdonald
21 * Copyright (C) 1994 David Carter [carter@compsci.bristol.ac.uk]
23 * with work by William Rucklidge (wjr@cs.cornell.edu)
25 * Jes Sorensen (jds@kom.auc.dk)
30 * - 24 Jul 96: Copper generates now vblank interrupt and
31 * VESA Power Saving Protocol is fully implemented
32 * - 14 Jul 96: Rework and hopefully last ECS bugs fixed
33 * - 7 Mar 96: Hardware sprite support by Roman Zippel
34 * - 18 Feb 96: OCS and ECS support by Roman Zippel
35 * Hardware functions completely rewritten
36 * - 2 Dec 95: AGA version by Geert Uytterhoeven
38 * This file is subject to the terms and conditions of the GNU General Public
39 * License. See the file COPYING in the main directory of this archive
43 #include <linux/module.h>
44 #include <linux/kernel.h>
45 #include <linux/errno.h>
46 #include <linux/string.h>
48 #include <linux/tty.h>
49 #include <linux/slab.h>
50 #include <linux/delay.h>
51 #include <linux/config.h>
52 #include <linux/interrupt.h>
54 #include <linux/init.h>
55 #include <linux/ioport.h>
57 #include <asm/uaccess.h>
58 #include <asm/system.h>
60 #include <asm/amigahw.h>
61 #include <asm/amigaints.h>
62 #include <asm/setup.h>
69 #if !defined(CONFIG_FB_AMIGA_OCS) && !defined(CONFIG_FB_AMIGA_ECS) && !defined(CONFIG_FB_AMIGA_AGA)
70 #define CONFIG_FB_AMIGA_OCS /* define at least one fb driver, this will change later */
73 #if !defined(CONFIG_FB_AMIGA_OCS)
75 #elif defined(CONFIG_FB_AMIGA_ECS) || defined(CONFIG_FB_AMIGA_AGA)
76 # define IS_OCS (chipset == TAG_OCS)
78 # define CONFIG_FB_AMIGA_OCS_ONLY
82 #if !defined(CONFIG_FB_AMIGA_ECS)
84 #elif defined(CONFIG_FB_AMIGA_OCS) || defined(CONFIG_FB_AMIGA_AGA)
85 # define IS_ECS (chipset == TAG_ECS)
87 # define CONFIG_FB_AMIGA_ECS_ONLY
91 #if !defined(CONFIG_FB_AMIGA_AGA)
93 #elif defined(CONFIG_FB_AMIGA_OCS) || defined(CONFIG_FB_AMIGA_ECS)
94 # define IS_AGA (chipset == TAG_AGA)
96 # define CONFIG_FB_AMIGA_AGA_ONLY
101 # define DPRINTK(fmt, args...) printk(KERN_DEBUG "%s: " fmt, __FUNCTION__ , ## args)
103 # define DPRINTK(fmt, args...)
106 /*******************************************************************************
109 Generic video timings
110 ---------------------
112 Timings used by the frame buffer interface:
114 +----------+---------------------------------------------+----------+-------+
116 | | |upper_margin | | |
118 +----------###############################################----------+-------+
123 | left # | # right | hsync |
124 | margin # | xres # margin | len |
125 |<-------->#<---------------+--------------------------->#<-------->|<----->|
139 +----------###############################################----------+-------+
141 | | |lower_margin | | |
143 +----------+---------------------------------------------+----------+-------+
147 +----------+---------------------------------------------+----------+-------+
153 The Amiga native chipsets uses another timing scheme:
155 - hsstrt: Start of horizontal synchronization pulse
156 - hsstop: End of horizontal synchronization pulse
157 - htotal: Last value on the line (i.e. line length = htotal+1)
158 - vsstrt: Start of vertical synchronization pulse
159 - vsstop: End of vertical synchronization pulse
160 - vtotal: Last line value (i.e. number of lines = vtotal+1)
161 - hcenter: Start of vertical retrace for interlace
163 You can specify the blanking timings independently. Currently I just set
164 them equal to the respective synchronization values:
166 - hbstrt: Start of horizontal blank
167 - hbstop: End of horizontal blank
168 - vbstrt: Start of vertical blank
169 - vbstop: End of vertical blank
171 Horizontal values are in color clock cycles (280 ns), vertical values are in
174 (0, 0) is somewhere in the upper-left corner :-)
177 Amiga visible window definitions
178 --------------------------------
180 Currently I only have values for AGA, SHRES (28 MHz dotclock). Feel free to
181 make corrections and/or additions.
183 Within the above synchronization specifications, the visible window is
184 defined by the following parameters (actual register resolutions may be
185 different; all horizontal values are normalized with respect to the pixel
188 - diwstrt_h: Horizontal start of the visible window
189 - diwstop_h: Horizontal stop+1(*) of the visible window
190 - diwstrt_v: Vertical start of the visible window
191 - diwstop_v: Vertical stop of the visible window
192 - ddfstrt: Horizontal start of display DMA
193 - ddfstop: Horizontal stop of display DMA
194 - hscroll: Horizontal display output delay
198 - sprstrt_h: Horizontal start-4 of sprite
199 - sprstrt_v: Vertical start of sprite
201 (*) Even Commodore did it wrong in the AGA monitor drivers by not adding 1.
203 Horizontal values are in dotclock cycles (35 ns), vertical values are in
206 (0, 0) is somewhere in the upper-left corner :-)
209 Dependencies (AGA, SHRES (35 ns dotclock))
210 -------------------------------------------
212 Since there are much more parameters for the Amiga display than for the
213 frame buffer interface, there must be some dependencies among the Amiga
214 display parameters. Here's what I found out:
216 - ddfstrt and ddfstop are best aligned to 64 pixels.
217 - the chipset needs 64+4 horizontal pixels after the DMA start before the
218 first pixel is output, so diwstrt_h = ddfstrt+64+4 if you want to
219 display the first pixel on the line too. Increase diwstrt_h for virtual
221 - the display DMA always fetches 64 pixels at a time (fmode = 3).
222 - ddfstop is ddfstrt+#pixels-64.
223 - diwstop_h = diwstrt_h+xres+1. Because of the additional 1 this can be 1
225 - hscroll simply adds a delay to the display output. Smooth horizontal
226 panning needs an extra 64 pixels on the left to prefetch the pixels that
227 `fall off' on the left.
228 - if ddfstrt < 192, the sprite DMA cycles are all stolen by the bitplane
229 DMA, so it's best to make the DMA start as late as possible.
230 - you really don't want to make ddfstrt < 128, since this will steal DMA
231 cycles from the other DMA channels (audio, floppy and Chip RAM refresh).
232 - I make diwstop_h and diwstop_v as large as possible.
237 - all values are SHRES pixel (35ns)
239 table 1:fetchstart table 2:prefetch table 3:fetchsize
240 ------------------ ---------------- -----------------
241 Pixclock # SHRES|HIRES|LORES # SHRES|HIRES|LORES # SHRES|HIRES|LORES
242 -------------#------+-----+------#------+-----+------#------+-----+------
243 Bus width 1x # 16 | 32 | 64 # 16 | 32 | 64 # 64 | 64 | 64
244 Bus width 2x # 32 | 64 | 128 # 32 | 64 | 64 # 64 | 64 | 128
245 Bus width 4x # 64 | 128 | 256 # 64 | 64 | 64 # 64 | 128 | 256
247 - chipset needs 4 pixels before the first pixel is output
248 - ddfstrt must be aligned to fetchstart (table 1)
249 - chipset needs also prefetch (table 2) to get first pixel data, so
250 ddfstrt = ((diwstrt_h-4) & -fetchstart) - prefetch
251 - for horizontal panning decrease diwstrt_h
252 - the length of a fetchline must be aligned to fetchsize (table 3)
253 - if fetchstart is smaller than fetchsize, then ddfstrt can a little bit
254 moved to optimize use of dma (useful for OCS/ECS overscan displays)
255 - ddfstop is ddfstrt+ddfsize-fetchsize
256 - If C= didn't change anything for AGA, then at following positions the
257 dma bus is already used:
258 ddfstrt < 48 -> memory refresh
261 < 192 -> sprite 0 dma
262 < 416 -> sprite dma (32 per sprite)
263 - in accordance with the hardware reference manual a hardware stop is at
264 192, but AGA (ECS?) can go below this.
269 Since there are limits on the earliest start value for display DMA and the
270 display of sprites, I use the following policy on horizontal panning and
273 - if you want to start display DMA too early, you lose the ability to
274 do smooth horizontal panning (xpanstep 1 -> 64).
275 - if you want to go even further, you lose the hardware cursor too.
277 IMHO a hardware cursor is more important for X than horizontal scrolling,
278 so that's my motivation.
284 ami_decode_var() converts the frame buffer values to the Amiga values. It's
285 just a `straightforward' implementation of the above rules.
291 xres yres left right upper lower hsync vsync
292 ---- ---- ---- ----- ----- ----- ----- -----
293 80x25 720 400 27 45 35 12 108 2
294 80x30 720 480 27 45 30 9 108 2
296 These were taken from a XFree86 configuration file, recalculated for a 28 MHz
297 dotclock (Amigas don't have a 25 MHz dotclock) and converted to frame buffer
300 As a comparison, graphics/monitor.h suggests the following:
302 xres yres left right upper lower hsync vsync
303 ---- ---- ---- ----- ----- ----- ----- -----
305 VGA 640 480 52 112 24 19 112 - 2 +
306 VGA70 640 400 52 112 27 21 112 - 2 -
312 VSYNC HSYNC Vertical size Vertical total
313 ----- ----- ------------- --------------
314 + + Reserved Reserved
319 Source: CL-GD542X Technical Reference Manual, Cirrus Logic, Oct 1992
322 Broadcast video timings
323 -----------------------
325 According to the CCIR and RETMA specifications, we have the following values:
330 - a scanline is 64 µs long, of which 52.48 µs are visible. This is about
331 736 visible 70 ns pixels per line.
332 - we have 625 scanlines, of which 575 are visible (interlaced); after
333 rounding this becomes 576.
338 - a scanline is 63.5 µs long, of which 53.5 µs are visible. This is about
339 736 visible 70 ns pixels per line.
340 - we have 525 scanlines, of which 485 are visible (interlaced); after
341 rounding this becomes 484.
343 Thus if you want a PAL compatible display, you have to do the following:
345 - set the FB_SYNC_BROADCAST flag to indicate that standard broadcast
346 timings are to be used.
347 - make sure upper_margin+yres+lower_margin+vsync_len = 625 for an
348 interlaced, 312 for a non-interlaced and 156 for a doublescanned
350 - make sure left_margin+xres+right_margin+hsync_len = 1816 for a SHRES,
351 908 for a HIRES and 454 for a LORES display.
352 - the left visible part begins at 360 (SHRES; HIRES:180, LORES:90),
353 left_margin+2*hsync_len must be greater or equal.
354 - the upper visible part begins at 48 (interlaced; non-interlaced:24,
355 doublescanned:12), upper_margin+2*vsync_len must be greater or equal.
356 - ami_encode_var() calculates margins with a hsync of 5320 ns and a vsync
359 The settings for a NTSC compatible display are straightforward.
361 Note that in a strict sense the PAL and NTSC standards only define the
362 encoding of the color part (chrominance) of the video signal and don't say
363 anything about horizontal/vertical synchronization nor refresh rates.
368 *******************************************************************************/
372 * Custom Chipset Definitions
375 #define CUSTOM_OFS(fld) ((long)&((struct CUSTOM*)0)->fld)
378 * BPLCON0 -- Bitplane Control Register 0
381 #define BPC0_HIRES (0x8000)
382 #define BPC0_BPU2 (0x4000) /* Bit plane used count */
383 #define BPC0_BPU1 (0x2000)
384 #define BPC0_BPU0 (0x1000)
385 #define BPC0_HAM (0x0800) /* HAM mode */
386 #define BPC0_DPF (0x0400) /* Double playfield */
387 #define BPC0_COLOR (0x0200) /* Enable colorburst */
388 #define BPC0_GAUD (0x0100) /* Genlock audio enable */
389 #define BPC0_UHRES (0x0080) /* Ultrahi res enable */
390 #define BPC0_SHRES (0x0040) /* Super hi res mode */
391 #define BPC0_BYPASS (0x0020) /* Bypass LUT - AGA */
392 #define BPC0_BPU3 (0x0010) /* AGA */
393 #define BPC0_LPEN (0x0008) /* Light pen enable */
394 #define BPC0_LACE (0x0004) /* Interlace */
395 #define BPC0_ERSY (0x0002) /* External resync */
396 #define BPC0_ECSENA (0x0001) /* ECS enable */
399 * BPLCON2 -- Bitplane Control Register 2
402 #define BPC2_ZDBPSEL2 (0x4000) /* Bitplane to be used for ZD - AGA */
403 #define BPC2_ZDBPSEL1 (0x2000)
404 #define BPC2_ZDBPSEL0 (0x1000)
405 #define BPC2_ZDBPEN (0x0800) /* Enable ZD with ZDBPSELx - AGA */
406 #define BPC2_ZDCTEN (0x0400) /* Enable ZD with palette bit #31 - AGA */
407 #define BPC2_KILLEHB (0x0200) /* Kill EHB mode - AGA */
408 #define BPC2_RDRAM (0x0100) /* Color table accesses read, not write - AGA */
409 #define BPC2_SOGEN (0x0080) /* SOG output pin high - AGA */
410 #define BPC2_PF2PRI (0x0040) /* PF2 priority over PF1 */
411 #define BPC2_PF2P2 (0x0020) /* PF2 priority wrt sprites */
412 #define BPC2_PF2P1 (0x0010)
413 #define BPC2_PF2P0 (0x0008)
414 #define BPC2_PF1P2 (0x0004) /* ditto PF1 */
415 #define BPC2_PF1P1 (0x0002)
416 #define BPC2_PF1P0 (0x0001)
419 * BPLCON3 -- Bitplane Control Register 3 (AGA)
422 #define BPC3_BANK2 (0x8000) /* Bits to select color register bank */
423 #define BPC3_BANK1 (0x4000)
424 #define BPC3_BANK0 (0x2000)
425 #define BPC3_PF2OF2 (0x1000) /* Bits for color table offset when PF2 */
426 #define BPC3_PF2OF1 (0x0800)
427 #define BPC3_PF2OF0 (0x0400)
428 #define BPC3_LOCT (0x0200) /* Color register writes go to low bits */
429 #define BPC3_SPRES1 (0x0080) /* Sprite resolution bits */
430 #define BPC3_SPRES0 (0x0040)
431 #define BPC3_BRDRBLNK (0x0020) /* Border blanked? */
432 #define BPC3_BRDRTRAN (0x0010) /* Border transparent? */
433 #define BPC3_ZDCLKEN (0x0004) /* ZD pin is 14 MHz (HIRES) clock output */
434 #define BPC3_BRDRSPRT (0x0002) /* Sprites in border? */
435 #define BPC3_EXTBLKEN (0x0001) /* BLANK programmable */
438 * BPLCON4 -- Bitplane Control Register 4 (AGA)
441 #define BPC4_BPLAM7 (0x8000) /* bitplane color XOR field */
442 #define BPC4_BPLAM6 (0x4000)
443 #define BPC4_BPLAM5 (0x2000)
444 #define BPC4_BPLAM4 (0x1000)
445 #define BPC4_BPLAM3 (0x0800)
446 #define BPC4_BPLAM2 (0x0400)
447 #define BPC4_BPLAM1 (0x0200)
448 #define BPC4_BPLAM0 (0x0100)
449 #define BPC4_ESPRM7 (0x0080) /* 4 high bits for even sprite colors */
450 #define BPC4_ESPRM6 (0x0040)
451 #define BPC4_ESPRM5 (0x0020)
452 #define BPC4_ESPRM4 (0x0010)
453 #define BPC4_OSPRM7 (0x0008) /* 4 high bits for odd sprite colors */
454 #define BPC4_OSPRM6 (0x0004)
455 #define BPC4_OSPRM5 (0x0002)
456 #define BPC4_OSPRM4 (0x0001)
459 * BEAMCON0 -- Beam Control Register
462 #define BMC0_HARDDIS (0x4000) /* Disable hardware limits */
463 #define BMC0_LPENDIS (0x2000) /* Disable light pen latch */
464 #define BMC0_VARVBEN (0x1000) /* Enable variable vertical blank */
465 #define BMC0_LOLDIS (0x0800) /* Disable long/short line toggle */
466 #define BMC0_CSCBEN (0x0400) /* Composite sync/blank */
467 #define BMC0_VARVSYEN (0x0200) /* Enable variable vertical sync */
468 #define BMC0_VARHSYEN (0x0100) /* Enable variable horizontal sync */
469 #define BMC0_VARBEAMEN (0x0080) /* Enable variable beam counters */
470 #define BMC0_DUAL (0x0040) /* Enable alternate horizontal beam counter */
471 #define BMC0_PAL (0x0020) /* Set decodes for PAL */
472 #define BMC0_VARCSYEN (0x0010) /* Enable variable composite sync */
473 #define BMC0_BLANKEN (0x0008) /* Blank enable (no longer used on AGA) */
474 #define BMC0_CSYTRUE (0x0004) /* CSY polarity */
475 #define BMC0_VSYTRUE (0x0002) /* VSY polarity */
476 #define BMC0_HSYTRUE (0x0001) /* HSY polarity */
480 * FMODE -- Fetch Mode Control Register (AGA)
483 #define FMODE_SSCAN2 (0x8000) /* Sprite scan-doubling */
484 #define FMODE_BSCAN2 (0x4000) /* Use PF2 modulus every other line */
485 #define FMODE_SPAGEM (0x0008) /* Sprite page mode */
486 #define FMODE_SPR32 (0x0004) /* Sprite 32 bit fetch */
487 #define FMODE_BPAGEM (0x0002) /* Bitplane page mode */
488 #define FMODE_BPL32 (0x0001) /* Bitplane 32 bit fetch */
491 * Tags used to indicate a specific Pixel Clock
493 * clk_shift is the shift value to get the timings in 35 ns units
496 enum { TAG_SHRES, TAG_HIRES, TAG_LORES };
499 * Tags used to indicate the specific chipset
502 enum { TAG_OCS, TAG_ECS, TAG_AGA };
505 * Tags used to indicate the memory bandwidth
508 enum { TAG_FMODE_1, TAG_FMODE_2, TAG_FMODE_4 };
512 * Clock Definitions, Maximum Display Depth
514 * These depend on the E-Clock or the Chipset, so they are filled in
518 static u_long pixclock[3]; /* SHRES/HIRES/LORES: index = clk_shift */
519 static u_short maxdepth[3]; /* SHRES/HIRES/LORES: index = clk_shift */
520 static u_short maxfmode, chipset;
524 * Broadcast Video Timings
526 * Horizontal values are in 35 ns (SHRES) units
527 * Vertical values are in interlaced scanlines
530 #define PAL_DIWSTRT_H (360) /* PAL Window Limits */
531 #define PAL_DIWSTRT_V (48)
532 #define PAL_HTOTAL (1816)
533 #define PAL_VTOTAL (625)
535 #define NTSC_DIWSTRT_H (360) /* NTSC Window Limits */
536 #define NTSC_DIWSTRT_V (40)
537 #define NTSC_HTOTAL (1816)
538 #define NTSC_VTOTAL (525)
545 #define up2(v) (((v)+1) & -2)
546 #define down2(v) ((v) & -2)
547 #define div2(v) ((v)>>1)
548 #define mod2(v) ((v) & 1)
550 #define up4(v) (((v)+3) & -4)
551 #define down4(v) ((v) & -4)
552 #define mul4(v) ((v)<<2)
553 #define div4(v) ((v)>>2)
554 #define mod4(v) ((v) & 3)
556 #define up8(v) (((v)+7) & -8)
557 #define down8(v) ((v) & -8)
558 #define div8(v) ((v)>>3)
559 #define mod8(v) ((v) & 7)
561 #define up16(v) (((v)+15) & -16)
562 #define down16(v) ((v) & -16)
563 #define div16(v) ((v)>>4)
564 #define mod16(v) ((v) & 15)
566 #define up32(v) (((v)+31) & -32)
567 #define down32(v) ((v) & -32)
568 #define div32(v) ((v)>>5)
569 #define mod32(v) ((v) & 31)
571 #define up64(v) (((v)+63) & -64)
572 #define down64(v) ((v) & -64)
573 #define div64(v) ((v)>>6)
574 #define mod64(v) ((v) & 63)
576 #define upx(x,v) (((v)+(x)-1) & -(x))
577 #define downx(x,v) ((v) & -(x))
578 #define modx(x,v) ((v) & ((x)-1))
580 /* if x1 is not a constant, this macro won't make real sense :-) */
582 #define DIVUL(x1, x2) ({int res; asm("divul %1,%2,%3": "=d" (res): \
583 "d" (x2), "d" ((long)((x1)/0x100000000ULL)), "0" ((long)(x1))); res;})
585 /* We know a bit about the numbers, so we can do it this way */
586 #define DIVUL(x1, x2) ((((long)((unsigned long long)x1 >> 8) / x2) << 8) + \
587 ((((long)((unsigned long long)x1 >> 8) % x2) << 8) / x2))
590 #define highw(x) ((u_long)(x)>>16 & 0xffff)
591 #define loww(x) ((u_long)(x) & 0xffff)
593 #define custom amiga_custom
595 #define VBlankOn() custom.intena = IF_SETCLR|IF_COPER
596 #define VBlankOff() custom.intena = IF_COPER
600 * Chip RAM we reserve for the Frame Buffer
602 * This defines the Maximum Virtual Screen Size
603 * (Setable per kernel options?)
606 #define VIDEOMEMSIZE_AGA_2M (1310720) /* AGA (2MB) : max 1280*1024*256 */
607 #define VIDEOMEMSIZE_AGA_1M (786432) /* AGA (1MB) : max 1024*768*256 */
608 #define VIDEOMEMSIZE_ECS_2M (655360) /* ECS (2MB) : max 1280*1024*16 */
609 #define VIDEOMEMSIZE_ECS_1M (393216) /* ECS (1MB) : max 1024*768*16 */
610 #define VIDEOMEMSIZE_OCS (262144) /* OCS : max ca. 800*600*16 */
612 #define SPRITEMEMSIZE (64*64/4) /* max 64*64*4 */
613 #define DUMMYSPRITEMEMSIZE (8)
614 static u_long spritememory;
616 #define CHIPRAM_SAFETY_LIMIT (16384)
618 static u_long videomemory;
621 * This is the earliest allowed start of fetching display data.
622 * Only if you really want no hardware cursor and audio,
623 * set this to 128, but let it better at 192
626 static u_long min_fstrt = 192;
628 #define assignchunk(name, type, ptr, size) \
630 (name) = (type)(ptr); \
636 * Copper Instructions
639 #define CMOVE(val, reg) (CUSTOM_OFS(reg)<<16 | (val))
640 #define CMOVE2(val, reg) ((CUSTOM_OFS(reg)+2)<<16 | (val))
641 #define CWAIT(x, y) (((y) & 0x1fe)<<23 | ((x) & 0x7f0)<<13 | 0x0001fffe)
642 #define CEND (0xfffffffe)
650 static struct copdisplay {
657 static u_short currentcop = 0;
660 * Hardware Cursor API Definitions
661 * These used to be in linux/fb.h, but were preliminary and used by
665 #define FBIOGET_FCURSORINFO 0x4607
666 #define FBIOGET_VCURSORINFO 0x4608
667 #define FBIOPUT_VCURSORINFO 0x4609
668 #define FBIOGET_CURSORSTATE 0x460A
669 #define FBIOPUT_CURSORSTATE 0x460B
672 struct fb_fix_cursorinfo {
673 __u16 crsr_width; /* width and height of the cursor in */
674 __u16 crsr_height; /* pixels (zero if no cursor) */
675 __u16 crsr_xsize; /* cursor size in display pixels */
677 __u16 crsr_color1; /* colormap entry for cursor color1 */
678 __u16 crsr_color2; /* colormap entry for cursor color2 */
681 struct fb_var_cursorinfo {
686 __u8 data[1]; /* field with [height][width] */
689 struct fb_cursorstate {
695 #define FB_CURSOR_OFF 0
696 #define FB_CURSOR_ON 1
697 #define FB_CURSOR_FLASH 2
704 static int cursorrate = 20; /* Number of frames/flash toggle */
705 static u_short cursorstate = -1;
706 static u_short cursormode = FB_CURSOR_OFF;
708 static u_short *lofsprite, *shfsprite, *dummysprite;
714 static struct amifb_par {
718 int xres; /* vmode */
719 int yres; /* vmode */
720 int vxres; /* vmode */
721 int vyres; /* vmode */
722 int xoffset; /* vmode */
723 int yoffset; /* vmode */
724 u_short bpp; /* vmode */
725 u_short clk_shift; /* vmode */
726 u_short line_shift; /* vmode */
727 int vmode; /* vmode */
728 u_short diwstrt_h; /* vmode */
729 u_short diwstop_h; /* vmode */
730 u_short diwstrt_v; /* vmode */
731 u_short diwstop_v; /* vmode */
732 u_long next_line; /* modulo for next line */
733 u_long next_plane; /* modulo for next plane */
738 short crsr_x; /* movecursor */
739 short crsr_y; /* movecursor */
747 /* OCS Hardware Registers */
749 u_long bplpt0; /* vmode, pan (Note: physical address) */
750 u_long bplpt0wrap; /* vmode, pan (Note: physical address) */
755 u_short bplcon0; /* vmode */
756 u_short bplcon1; /* vmode */
757 u_short htotal; /* vmode */
758 u_short vtotal; /* vmode */
760 /* Additional ECS Hardware Registers */
762 u_short bplcon3; /* vmode */
763 u_short beamcon0; /* vmode */
764 u_short hsstrt; /* vmode */
765 u_short hsstop; /* vmode */
766 u_short hbstrt; /* vmode */
767 u_short hbstop; /* vmode */
768 u_short vsstrt; /* vmode */
769 u_short vsstop; /* vmode */
770 u_short vbstrt; /* vmode */
771 u_short vbstop; /* vmode */
772 u_short hcenter; /* vmode */
774 /* Additional AGA Hardware Registers */
776 u_short fmode; /* vmode */
780 static struct fb_info fb_info = {
783 .visual = FB_VISUAL_PSEUDOCOLOR,
784 .accel = FB_ACCEL_AMIGABLITT
790 * Saved color entry 0 so we can restore it when unblanking
793 static u_char red0, green0, blue0;
796 #if defined(CONFIG_FB_AMIGA_ECS)
797 static u_short ecs_palette[32];
802 * Latches for Display Changes during VBlank
805 static u_short do_vmode_full = 0; /* Change the Video Mode */
806 static u_short do_vmode_pan = 0; /* Update the Video Mode */
807 static short do_blank = 0; /* (Un)Blank the Screen (±1) */
808 static u_short do_cursor = 0; /* Move the Cursor */
815 static u_short is_blanked = 0; /* Screen is Blanked */
816 static u_short is_lace = 0; /* Screen is laced */
819 * Predefined Video Modes
823 static struct fb_videomode ami_modedb[] __initdata = {
826 * AmigaOS Video Modes
828 * If you change these, make sure to update DEFMODE_* as well!
832 /* 640x200, 15 kHz, 60 Hz (NTSC) */
833 "ntsc", 60, 640, 200, TAG_HIRES, 106, 86, 44, 16, 76, 2,
834 FB_SYNC_BROADCAST, FB_VMODE_NONINTERLACED | FB_VMODE_YWRAP
836 /* 640x400, 15 kHz, 60 Hz interlaced (NTSC) */
837 "ntsc-lace", 60, 640, 400, TAG_HIRES, 106, 86, 88, 33, 76, 4,
838 FB_SYNC_BROADCAST, FB_VMODE_INTERLACED | FB_VMODE_YWRAP
840 /* 640x256, 15 kHz, 50 Hz (PAL) */
841 "pal", 50, 640, 256, TAG_HIRES, 106, 86, 40, 14, 76, 2,
842 FB_SYNC_BROADCAST, FB_VMODE_NONINTERLACED | FB_VMODE_YWRAP
844 /* 640x512, 15 kHz, 50 Hz interlaced (PAL) */
845 "pal-lace", 50, 640, 512, TAG_HIRES, 106, 86, 80, 29, 76, 4,
846 FB_SYNC_BROADCAST, FB_VMODE_INTERLACED | FB_VMODE_YWRAP
848 /* 640x480, 29 kHz, 57 Hz */
849 "multiscan", 57, 640, 480, TAG_SHRES, 96, 112, 29, 8, 72, 8,
850 0, FB_VMODE_NONINTERLACED | FB_VMODE_YWRAP
852 /* 640x960, 29 kHz, 57 Hz interlaced */
853 "multiscan-lace", 57, 640, 960, TAG_SHRES, 96, 112, 58, 16, 72, 16,
854 0, FB_VMODE_INTERLACED | FB_VMODE_YWRAP
856 /* 640x200, 15 kHz, 72 Hz */
857 "euro36", 72, 640, 200, TAG_HIRES, 92, 124, 6, 6, 52, 5,
858 0, FB_VMODE_NONINTERLACED | FB_VMODE_YWRAP
860 /* 640x400, 15 kHz, 72 Hz interlaced */
861 "euro36-lace", 72, 640, 400, TAG_HIRES, 92, 124, 12, 12, 52, 10,
862 0, FB_VMODE_INTERLACED | FB_VMODE_YWRAP
864 /* 640x400, 29 kHz, 68 Hz */
865 "euro72", 68, 640, 400, TAG_SHRES, 164, 92, 9, 9, 80, 8,
866 0, FB_VMODE_NONINTERLACED | FB_VMODE_YWRAP
868 /* 640x800, 29 kHz, 68 Hz interlaced */
869 "euro72-lace", 68, 640, 800, TAG_SHRES, 164, 92, 18, 18, 80, 16,
870 0, FB_VMODE_INTERLACED | FB_VMODE_YWRAP
872 /* 800x300, 23 kHz, 70 Hz */
873 "super72", 70, 800, 300, TAG_SHRES, 212, 140, 10, 11, 80, 7,
874 0, FB_VMODE_NONINTERLACED | FB_VMODE_YWRAP
876 /* 800x600, 23 kHz, 70 Hz interlaced */
877 "super72-lace", 70, 800, 600, TAG_SHRES, 212, 140, 20, 22, 80, 14,
878 0, FB_VMODE_INTERLACED | FB_VMODE_YWRAP
880 /* 640x200, 27 kHz, 57 Hz doublescan */
881 "dblntsc", 57, 640, 200, TAG_SHRES, 196, 124, 18, 17, 80, 4,
882 0, FB_VMODE_DOUBLE | FB_VMODE_YWRAP
884 /* 640x400, 27 kHz, 57 Hz */
885 "dblntsc-ff", 57, 640, 400, TAG_SHRES, 196, 124, 36, 35, 80, 7,
886 0, FB_VMODE_NONINTERLACED | FB_VMODE_YWRAP
888 /* 640x800, 27 kHz, 57 Hz interlaced */
889 "dblntsc-lace", 57, 640, 800, TAG_SHRES, 196, 124, 72, 70, 80, 14,
890 0, FB_VMODE_INTERLACED | FB_VMODE_YWRAP
892 /* 640x256, 27 kHz, 47 Hz doublescan */
893 "dblpal", 47, 640, 256, TAG_SHRES, 196, 124, 14, 13, 80, 4,
894 0, FB_VMODE_DOUBLE | FB_VMODE_YWRAP
896 /* 640x512, 27 kHz, 47 Hz */
897 "dblpal-ff", 47, 640, 512, TAG_SHRES, 196, 124, 28, 27, 80, 7,
898 0, FB_VMODE_NONINTERLACED | FB_VMODE_YWRAP
900 /* 640x1024, 27 kHz, 47 Hz interlaced */
901 "dblpal-lace", 47, 640, 1024, TAG_SHRES, 196, 124, 56, 54, 80, 14,
902 0, FB_VMODE_INTERLACED | FB_VMODE_YWRAP
910 /* 640x480, 31 kHz, 60 Hz (VGA) */
911 "vga", 60, 640, 480, TAG_SHRES, 64, 96, 30, 9, 112, 2,
912 0, FB_VMODE_NONINTERLACED | FB_VMODE_YWRAP
914 /* 640x400, 31 kHz, 70 Hz (VGA) */
915 "vga70", 70, 640, 400, TAG_SHRES, 64, 96, 35, 12, 112, 2,
916 FB_SYNC_VERT_HIGH_ACT | FB_SYNC_COMP_HIGH_ACT, FB_VMODE_NONINTERLACED | FB_VMODE_YWRAP
923 * These modes don't work yet because there's no A2024 driver.
927 /* 1024x800, 10 Hz */
928 "a2024-10", 10, 1024, 800, TAG_HIRES, 0, 0, 0, 0, 0, 0,
929 0, FB_VMODE_NONINTERLACED | FB_VMODE_YWRAP
931 /* 1024x800, 15 Hz */
932 "a2024-15", 15, 1024, 800, TAG_HIRES, 0, 0, 0, 0, 0, 0,
933 0, FB_VMODE_NONINTERLACED | FB_VMODE_YWRAP
938 #define NUM_TOTAL_MODES ARRAY_SIZE(ami_modedb)
940 static char *mode_option __initdata = NULL;
941 static int round_down_bpp = 1; /* for mode probing */
948 #define DEFMODE_PAL 2 /* "pal" for PAL OCS/ECS */
949 #define DEFMODE_NTSC 0 /* "ntsc" for NTSC OCS/ECS */
950 #define DEFMODE_AMBER_PAL 3 /* "pal-lace" for flicker fixed PAL (A3000) */
951 #define DEFMODE_AMBER_NTSC 1 /* "ntsc-lace" for flicker fixed NTSC (A3000) */
952 #define DEFMODE_AGA 19 /* "vga70" for AGA */
955 static int amifb_ilbm = 0; /* interleaved or normal bitplanes */
956 static int amifb_inverse = 0;
960 * Macros for the conversion from real world values to hardware register
963 * This helps us to keep our attention on the real stuff...
965 * Hardware limits for AGA:
967 * parameter min max step
968 * --------- --- ---- ----
990 * Horizontal values are in 35 ns (SHRES) pixels
991 * Vertical values are in half scanlines
994 /* bplcon1 (smooth scrolling) */
996 #define hscroll2hw(hscroll) \
997 (((hscroll)<<12 & 0x3000) | ((hscroll)<<8 & 0xc300) | \
998 ((hscroll)<<4 & 0x0c00) | ((hscroll)<<2 & 0x00f0) | ((hscroll)>>2 & 0x000f))
1000 /* diwstrt/diwstop/diwhigh (visible display window) */
1002 #define diwstrt2hw(diwstrt_h, diwstrt_v) \
1003 (((diwstrt_v)<<7 & 0xff00) | ((diwstrt_h)>>2 & 0x00ff))
1004 #define diwstop2hw(diwstop_h, diwstop_v) \
1005 (((diwstop_v)<<7 & 0xff00) | ((diwstop_h)>>2 & 0x00ff))
1006 #define diwhigh2hw(diwstrt_h, diwstrt_v, diwstop_h, diwstop_v) \
1007 (((diwstop_h)<<3 & 0x2000) | ((diwstop_h)<<11 & 0x1800) | \
1008 ((diwstop_v)>>1 & 0x0700) | ((diwstrt_h)>>5 & 0x0020) | \
1009 ((diwstrt_h)<<3 & 0x0018) | ((diwstrt_v)>>9 & 0x0007))
1011 /* ddfstrt/ddfstop (display DMA) */
1013 #define ddfstrt2hw(ddfstrt) div8(ddfstrt)
1014 #define ddfstop2hw(ddfstop) div8(ddfstop)
1016 /* hsstrt/hsstop/htotal/vsstrt/vsstop/vtotal/hcenter (sync timings) */
1018 #define hsstrt2hw(hsstrt) (div8(hsstrt))
1019 #define hsstop2hw(hsstop) (div8(hsstop))
1020 #define htotal2hw(htotal) (div8(htotal)-1)
1021 #define vsstrt2hw(vsstrt) (div2(vsstrt))
1022 #define vsstop2hw(vsstop) (div2(vsstop))
1023 #define vtotal2hw(vtotal) (div2(vtotal)-1)
1024 #define hcenter2hw(htotal) (div8(htotal))
1026 /* hbstrt/hbstop/vbstrt/vbstop (blanking timings) */
1028 #define hbstrt2hw(hbstrt) (((hbstrt)<<8 & 0x0700) | ((hbstrt)>>3 & 0x00ff))
1029 #define hbstop2hw(hbstop) (((hbstop)<<8 & 0x0700) | ((hbstop)>>3 & 0x00ff))
1030 #define vbstrt2hw(vbstrt) (div2(vbstrt))
1031 #define vbstop2hw(vbstop) (div2(vbstop))
1035 #define rgb2hw8_high(red, green, blue) \
1036 (((red & 0xf0)<<4) | (green & 0xf0) | ((blue & 0xf0)>>4))
1037 #define rgb2hw8_low(red, green, blue) \
1038 (((red & 0x0f)<<8) | ((green & 0x0f)<<4) | (blue & 0x0f))
1039 #define rgb2hw4(red, green, blue) \
1040 (((red & 0xf0)<<4) | (green & 0xf0) | ((blue & 0xf0)>>4))
1041 #define rgb2hw2(red, green, blue) \
1042 (((red & 0xc0)<<4) | (green & 0xc0) | ((blue & 0xc0)>>4))
1044 /* sprpos/sprctl (sprite positioning) */
1046 #define spr2hw_pos(start_v, start_h) \
1047 (((start_v)<<7&0xff00) | ((start_h)>>3&0x00ff))
1048 #define spr2hw_ctl(start_v, start_h, stop_v) \
1049 (((stop_v)<<7&0xff00) | ((start_v)>>4&0x0040) | ((stop_v)>>5&0x0020) | \
1050 ((start_h)<<3&0x0018) | ((start_v)>>7&0x0004) | ((stop_v)>>8&0x0002) | \
1051 ((start_h)>>2&0x0001))
1053 /* get current vertical position of beam */
1054 #define get_vbpos() ((u_short)((*(u_long volatile *)&custom.vposr >> 7) & 0xffe))
1057 * Copper Initialisation List
1060 #define COPINITSIZE (sizeof(copins)*40)
1067 * Long Frame/Short Frame Copper List
1068 * Don't change the order, build_copper()/rebuild_copper() rely on this
1071 #define COPLISTSIZE (sizeof(copins)*64)
1074 cop_wait, cop_bplcon0,
1075 cop_spr0ptrh, cop_spr0ptrl,
1076 cop_diwstrt, cop_diwstop,
1081 * Pixel modes for Bitplanes and Sprites
1084 static u_short bplpixmode[3] = {
1085 BPC0_SHRES, /* 35 ns */
1086 BPC0_HIRES, /* 70 ns */
1090 static u_short sprpixmode[3] = {
1091 BPC3_SPRES1 | BPC3_SPRES0, /* 35 ns */
1092 BPC3_SPRES1, /* 70 ns */
1093 BPC3_SPRES0 /* 140 ns */
1097 * Fetch modes for Bitplanes and Sprites
1100 static u_short bplfetchmode[3] = {
1102 FMODE_BPL32, /* 2x */
1103 FMODE_BPAGEM | FMODE_BPL32 /* 4x */
1106 static u_short sprfetchmode[3] = {
1108 FMODE_SPR32, /* 2x */
1109 FMODE_SPAGEM | FMODE_SPR32 /* 4x */
1114 * Interface used by the world
1117 int amifb_setup(char*);
1119 static int amifb_check_var(struct fb_var_screeninfo *var,
1120 struct fb_info *info);
1121 static int amifb_set_par(struct fb_info *info);
1122 static int amifb_setcolreg(unsigned regno, unsigned red, unsigned green,
1123 unsigned blue, unsigned transp,
1124 struct fb_info *info);
1125 static int amifb_blank(int blank, struct fb_info *info);
1126 static int amifb_pan_display(struct fb_var_screeninfo *var,
1127 struct fb_info *info);
1128 static void amifb_fillrect(struct fb_info *info,
1129 const struct fb_fillrect *rect);
1130 static void amifb_copyarea(struct fb_info *info,
1131 const struct fb_copyarea *region);
1132 static void amifb_imageblit(struct fb_info *info,
1133 const struct fb_image *image);
1134 static int amifb_ioctl(struct fb_info *info, unsigned int cmd, unsigned long arg);
1138 * Interface to the low level console driver
1141 int amifb_init(void);
1142 static void amifb_deinit(void);
1148 static int flash_cursor(void);
1149 static irqreturn_t amifb_interrupt(int irq, void *dev_id, struct pt_regs *fp);
1150 static u_long chipalloc(u_long size);
1151 static void chipfree(void);
1157 static int ami_decode_var(struct fb_var_screeninfo *var,
1158 struct amifb_par *par);
1159 static int ami_encode_var(struct fb_var_screeninfo *var,
1160 struct amifb_par *par);
1161 static void ami_pan_var(struct fb_var_screeninfo *var);
1162 static int ami_update_par(void);
1163 static void ami_update_display(void);
1164 static void ami_init_display(void);
1165 static void ami_do_blank(void);
1166 static int ami_get_fix_cursorinfo(struct fb_fix_cursorinfo *fix);
1167 static int ami_get_var_cursorinfo(struct fb_var_cursorinfo *var, u_char __user *data);
1168 static int ami_set_var_cursorinfo(struct fb_var_cursorinfo *var, u_char __user *data);
1169 static int ami_get_cursorstate(struct fb_cursorstate *state);
1170 static int ami_set_cursorstate(struct fb_cursorstate *state);
1171 static void ami_set_sprite(void);
1172 static void ami_init_copper(void);
1173 static void ami_reinit_copper(void);
1174 static void ami_build_copper(void);
1175 static void ami_rebuild_copper(void);
1178 static struct fb_ops amifb_ops = {
1179 .owner = THIS_MODULE,
1180 .fb_check_var = amifb_check_var,
1181 .fb_set_par = amifb_set_par,
1182 .fb_setcolreg = amifb_setcolreg,
1183 .fb_blank = amifb_blank,
1184 .fb_pan_display = amifb_pan_display,
1185 .fb_fillrect = amifb_fillrect,
1186 .fb_copyarea = amifb_copyarea,
1187 .fb_imageblit = amifb_imageblit,
1188 .fb_ioctl = amifb_ioctl,
1191 static void __init amifb_setup_mcap(char *spec)
1194 int vmin, vmax, hmin, hmax;
1196 /* Format for monitor capabilities is: <Vmin>;<Vmax>;<Hmin>;<Hmax>
1197 * <V*> vertical freq. in Hz
1198 * <H*> horizontal freq. in kHz
1201 if (!(p = strsep(&spec, ";")) || !*p)
1203 vmin = simple_strtoul(p, NULL, 10);
1206 if (!(p = strsep(&spec, ";")) || !*p)
1208 vmax = simple_strtoul(p, NULL, 10);
1209 if (vmax <= 0 || vmax <= vmin)
1211 if (!(p = strsep(&spec, ";")) || !*p)
1213 hmin = 1000 * simple_strtoul(p, NULL, 10);
1216 if (!(p = strsep(&spec, "")) || !*p)
1218 hmax = 1000 * simple_strtoul(p, NULL, 10);
1219 if (hmax <= 0 || hmax <= hmin)
1222 fb_info.monspecs.vfmin = vmin;
1223 fb_info.monspecs.vfmax = vmax;
1224 fb_info.monspecs.hfmin = hmin;
1225 fb_info.monspecs.hfmax = hmax;
1228 int __init amifb_setup(char *options)
1232 if (!options || !*options)
1235 while ((this_opt = strsep(&options, ",")) != NULL) {
1238 if (!strcmp(this_opt, "inverse")) {
1241 } else if (!strcmp(this_opt, "ilbm"))
1243 else if (!strncmp(this_opt, "monitorcap:", 11))
1244 amifb_setup_mcap(this_opt+11);
1245 else if (!strncmp(this_opt, "fstart:", 7))
1246 min_fstrt = simple_strtoul(this_opt+7, NULL, 0);
1248 mode_option = this_opt;
1258 static int amifb_check_var(struct fb_var_screeninfo *var,
1259 struct fb_info *info)
1262 struct amifb_par par;
1264 /* Validate wanted screen parameters */
1265 if ((err = ami_decode_var(var, &par)))
1268 /* Encode (possibly rounded) screen parameters */
1269 ami_encode_var(var, &par);
1274 static int amifb_set_par(struct fb_info *info)
1276 struct amifb_par *par = (struct amifb_par *)info->par;
1281 /* Decode wanted screen parameters */
1282 ami_decode_var(&info->var, par);
1284 /* Set new videomode */
1287 /* Set VBlank trigger */
1290 /* Update fix for new screen parameters */
1291 if (par->bpp == 1) {
1292 info->fix.type = FB_TYPE_PACKED_PIXELS;
1293 info->fix.type_aux = 0;
1294 } else if (amifb_ilbm) {
1295 info->fix.type = FB_TYPE_INTERLEAVED_PLANES;
1296 info->fix.type_aux = par->next_line;
1298 info->fix.type = FB_TYPE_PLANES;
1299 info->fix.type_aux = 0;
1301 info->fix.line_length = div8(upx(16<<maxfmode, par->vxres));
1303 if (par->vmode & FB_VMODE_YWRAP) {
1304 info->fix.ywrapstep = 1;
1305 info->fix.xpanstep = 0;
1306 info->fix.ypanstep = 0;
1307 info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_YWRAP |
1308 FBINFO_READS_FAST; /* override SCROLL_REDRAW */
1310 info->fix.ywrapstep = 0;
1311 if (par->vmode & FB_VMODE_SMOOTH_XPAN)
1312 info->fix.xpanstep = 1;
1314 info->fix.xpanstep = 16<<maxfmode;
1315 info->fix.ypanstep = 1;
1316 info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_YPAN;
1323 * Pan or Wrap the Display
1325 * This call looks only at xoffset, yoffset and the FB_VMODE_YWRAP flag
1328 static int amifb_pan_display(struct fb_var_screeninfo *var,
1329 struct fb_info *info)
1331 if (var->vmode & FB_VMODE_YWRAP) {
1332 if (var->yoffset < 0 ||
1333 var->yoffset >= info->var.yres_virtual || var->xoffset)
1337 * TODO: There will be problems when xpan!=1, so some columns
1338 * on the right side will never be seen
1340 if (var->xoffset+info->var.xres > upx(16<<maxfmode, info->var.xres_virtual) ||
1341 var->yoffset+info->var.yres > info->var.yres_virtual)
1345 info->var.xoffset = var->xoffset;
1346 info->var.yoffset = var->yoffset;
1347 if (var->vmode & FB_VMODE_YWRAP)
1348 info->var.vmode |= FB_VMODE_YWRAP;
1350 info->var.vmode &= ~FB_VMODE_YWRAP;
1355 #if BITS_PER_LONG == 32
1356 #define BYTES_PER_LONG 4
1357 #define SHIFT_PER_LONG 5
1358 #elif BITS_PER_LONG == 64
1359 #define BYTES_PER_LONG 8
1360 #define SHIFT_PER_LONG 6
1362 #define Please update me
1367 * Compose two values, using a bitmask as decision value
1368 * This is equivalent to (a & mask) | (b & ~mask)
1371 static inline unsigned long comp(unsigned long a, unsigned long b,
1374 return ((a ^ b) & mask) ^ b;
1378 static inline unsigned long xor(unsigned long a, unsigned long b,
1381 return (a & mask) ^ b;
1386 * Unaligned forward bit copy using 32-bit or 64-bit memory accesses
1389 static void bitcpy(unsigned long *dst, int dst_idx, const unsigned long *src,
1392 unsigned long first, last;
1393 int shift = dst_idx-src_idx, left, right;
1394 unsigned long d0, d1;
1400 shift = dst_idx-src_idx;
1401 first = ~0UL >> dst_idx;
1402 last = ~(~0UL >> ((dst_idx+n) % BITS_PER_LONG));
1405 // Same alignment for source and dest
1407 if (dst_idx+n <= BITS_PER_LONG) {
1411 *dst = comp(*src, *dst, first);
1413 // Multiple destination words
1416 *dst = comp(*src, *dst, first);
1419 n -= BITS_PER_LONG-dst_idx;
1440 *dst = comp(*src, *dst, last);
1443 // Different alignment for source and dest
1445 right = shift & (BITS_PER_LONG-1);
1446 left = -shift & (BITS_PER_LONG-1);
1448 if (dst_idx+n <= BITS_PER_LONG) {
1449 // Single destination word
1453 // Single source word
1454 *dst = comp(*src >> right, *dst, first);
1455 } else if (src_idx+n <= BITS_PER_LONG) {
1456 // Single source word
1457 *dst = comp(*src << left, *dst, first);
1462 *dst = comp(d0 << left | d1 >> right, *dst,
1466 // Multiple destination words
1470 // Single source word
1471 *dst = comp(d0 >> right, *dst, first);
1473 n -= BITS_PER_LONG-dst_idx;
1477 *dst = comp(d0 << left | d1 >> right, *dst,
1481 n -= BITS_PER_LONG-dst_idx;
1485 m = n % BITS_PER_LONG;
1489 *dst++ = d0 << left | d1 >> right;
1492 *dst++ = d0 << left | d1 >> right;
1495 *dst++ = d0 << left | d1 >> right;
1498 *dst++ = d0 << left | d1 >> right;
1504 *dst++ = d0 << left | d1 >> right;
1511 // Single source word
1512 *dst = comp(d0 << left, *dst, last);
1516 *dst = comp(d0 << left | d1 >> right,
1526 * Unaligned reverse bit copy using 32-bit or 64-bit memory accesses
1529 static void bitcpy_rev(unsigned long *dst, int dst_idx,
1530 const unsigned long *src, int src_idx, u32 n)
1532 unsigned long first, last;
1533 int shift = dst_idx-src_idx, left, right;
1534 unsigned long d0, d1;
1540 dst += (n-1)/BITS_PER_LONG;
1541 src += (n-1)/BITS_PER_LONG;
1542 if ((n-1) % BITS_PER_LONG) {
1543 dst_idx += (n-1) % BITS_PER_LONG;
1544 dst += dst_idx >> SHIFT_PER_LONG;
1545 dst_idx &= BITS_PER_LONG-1;
1546 src_idx += (n-1) % BITS_PER_LONG;
1547 src += src_idx >> SHIFT_PER_LONG;
1548 src_idx &= BITS_PER_LONG-1;
1551 shift = dst_idx-src_idx;
1552 first = ~0UL << (BITS_PER_LONG-1-dst_idx);
1553 last = ~(~0UL << (BITS_PER_LONG-1-((dst_idx-n) % BITS_PER_LONG)));
1556 // Same alignment for source and dest
1558 if ((unsigned long)dst_idx+1 >= n) {
1562 *dst = comp(*src, *dst, first);
1564 // Multiple destination words
1567 *dst = comp(*src, *dst, first);
1591 *dst = comp(*src, *dst, last);
1594 // Different alignment for source and dest
1596 right = shift & (BITS_PER_LONG-1);
1597 left = -shift & (BITS_PER_LONG-1);
1599 if ((unsigned long)dst_idx+1 >= n) {
1600 // Single destination word
1604 // Single source word
1605 *dst = comp(*src << left, *dst, first);
1606 } else if (1+(unsigned long)src_idx >= n) {
1607 // Single source word
1608 *dst = comp(*src >> right, *dst, first);
1613 *dst = comp(d0 >> right | d1 << left, *dst,
1617 // Multiple destination words
1621 // Single source word
1622 *dst = comp(d0 << left, *dst, first);
1628 *dst = comp(d0 >> right | d1 << left, *dst,
1636 m = n % BITS_PER_LONG;
1640 *dst-- = d0 >> right | d1 << left;
1643 *dst-- = d0 >> right | d1 << left;
1646 *dst-- = d0 >> right | d1 << left;
1649 *dst-- = d0 >> right | d1 << left;
1655 *dst-- = d0 >> right | d1 << left;
1662 // Single source word
1663 *dst = comp(d0 >> right, *dst, last);
1667 *dst = comp(d0 >> right | d1 << left,
1677 * Unaligned forward inverting bit copy using 32-bit or 64-bit memory
1681 static void bitcpy_not(unsigned long *dst, int dst_idx,
1682 const unsigned long *src, int src_idx, u32 n)
1684 unsigned long first, last;
1685 int shift = dst_idx-src_idx, left, right;
1686 unsigned long d0, d1;
1692 shift = dst_idx-src_idx;
1693 first = ~0UL >> dst_idx;
1694 last = ~(~0UL >> ((dst_idx+n) % BITS_PER_LONG));
1697 // Same alignment for source and dest
1699 if (dst_idx+n <= BITS_PER_LONG) {
1703 *dst = comp(~*src, *dst, first);
1705 // Multiple destination words
1708 *dst = comp(~*src, *dst, first);
1711 n -= BITS_PER_LONG-dst_idx;
1732 *dst = comp(~*src, *dst, last);
1735 // Different alignment for source and dest
1737 right = shift & (BITS_PER_LONG-1);
1738 left = -shift & (BITS_PER_LONG-1);
1740 if (dst_idx+n <= BITS_PER_LONG) {
1741 // Single destination word
1745 // Single source word
1746 *dst = comp(~*src >> right, *dst, first);
1747 } else if (src_idx+n <= BITS_PER_LONG) {
1748 // Single source word
1749 *dst = comp(~*src << left, *dst, first);
1754 *dst = comp(d0 << left | d1 >> right, *dst,
1758 // Multiple destination words
1762 // Single source word
1763 *dst = comp(d0 >> right, *dst, first);
1765 n -= BITS_PER_LONG-dst_idx;
1769 *dst = comp(d0 << left | d1 >> right, *dst,
1773 n -= BITS_PER_LONG-dst_idx;
1777 m = n % BITS_PER_LONG;
1781 *dst++ = d0 << left | d1 >> right;
1784 *dst++ = d0 << left | d1 >> right;
1787 *dst++ = d0 << left | d1 >> right;
1790 *dst++ = d0 << left | d1 >> right;
1796 *dst++ = d0 << left | d1 >> right;
1803 // Single source word
1804 *dst = comp(d0 << left, *dst, last);
1808 *dst = comp(d0 << left | d1 >> right,
1818 * Unaligned 32-bit pattern fill using 32/64-bit memory accesses
1821 static void bitfill32(unsigned long *dst, int dst_idx, u32 pat, u32 n)
1823 unsigned long val = pat;
1824 unsigned long first, last;
1829 #if BITS_PER_LONG == 64
1833 first = ~0UL >> dst_idx;
1834 last = ~(~0UL >> ((dst_idx+n) % BITS_PER_LONG));
1836 if (dst_idx+n <= BITS_PER_LONG) {
1840 *dst = comp(val, *dst, first);
1842 // Multiple destination words
1845 *dst = comp(val, *dst, first);
1847 n -= BITS_PER_LONG-dst_idx;
1868 *dst = comp(val, *dst, last);
1874 * Unaligned 32-bit pattern xor using 32/64-bit memory accesses
1877 static void bitxor32(unsigned long *dst, int dst_idx, u32 pat, u32 n)
1879 unsigned long val = pat;
1880 unsigned long first, last;
1885 #if BITS_PER_LONG == 64
1889 first = ~0UL >> dst_idx;
1890 last = ~(~0UL >> ((dst_idx+n) % BITS_PER_LONG));
1892 if (dst_idx+n <= BITS_PER_LONG) {
1896 *dst = xor(val, *dst, first);
1898 // Multiple destination words
1901 *dst = xor(val, *dst, first);
1903 n -= BITS_PER_LONG-dst_idx;
1920 *dst = xor(val, *dst, last);
1924 static inline void fill_one_line(int bpp, unsigned long next_plane,
1925 unsigned long *dst, int dst_idx, u32 n,
1929 dst += dst_idx >> SHIFT_PER_LONG;
1930 dst_idx &= (BITS_PER_LONG-1);
1931 bitfill32(dst, dst_idx, color & 1 ? ~0 : 0, n);
1935 dst_idx += next_plane*8;
1939 static inline void xor_one_line(int bpp, unsigned long next_plane,
1940 unsigned long *dst, int dst_idx, u32 n,
1944 dst += dst_idx >> SHIFT_PER_LONG;
1945 dst_idx &= (BITS_PER_LONG-1);
1946 bitxor32(dst, dst_idx, color & 1 ? ~0 : 0, n);
1950 dst_idx += next_plane*8;
1955 static void amifb_fillrect(struct fb_info *info,
1956 const struct fb_fillrect *rect)
1958 struct amifb_par *par = (struct amifb_par *)info->par;
1959 int dst_idx, x2, y2;
1963 if (!rect->width || !rect->height)
1967 * We could use hardware clipping but on many cards you get around
1968 * hardware clipping by writing to framebuffer directly.
1970 x2 = rect->dx + rect->width;
1971 y2 = rect->dy + rect->height;
1972 x2 = x2 < info->var.xres_virtual ? x2 : info->var.xres_virtual;
1973 y2 = y2 < info->var.yres_virtual ? y2 : info->var.yres_virtual;
1974 width = x2 - rect->dx;
1975 height = y2 - rect->dy;
1977 dst = (unsigned long *)
1978 ((unsigned long)info->screen_base & ~(BYTES_PER_LONG-1));
1979 dst_idx = ((unsigned long)info->screen_base & (BYTES_PER_LONG-1))*8;
1980 dst_idx += rect->dy*par->next_line*8+rect->dx;
1982 switch (rect->rop) {
1984 fill_one_line(info->var.bits_per_pixel,
1985 par->next_plane, dst, dst_idx, width,
1990 xor_one_line(info->var.bits_per_pixel, par->next_plane,
1991 dst, dst_idx, width, rect->color);
1994 dst_idx += par->next_line*8;
1998 static inline void copy_one_line(int bpp, unsigned long next_plane,
1999 unsigned long *dst, int dst_idx,
2000 unsigned long *src, int src_idx, u32 n)
2003 dst += dst_idx >> SHIFT_PER_LONG;
2004 dst_idx &= (BITS_PER_LONG-1);
2005 src += src_idx >> SHIFT_PER_LONG;
2006 src_idx &= (BITS_PER_LONG-1);
2007 bitcpy(dst, dst_idx, src, src_idx, n);
2010 dst_idx += next_plane*8;
2011 src_idx += next_plane*8;
2015 static inline void copy_one_line_rev(int bpp, unsigned long next_plane,
2016 unsigned long *dst, int dst_idx,
2017 unsigned long *src, int src_idx, u32 n)
2020 dst += dst_idx >> SHIFT_PER_LONG;
2021 dst_idx &= (BITS_PER_LONG-1);
2022 src += src_idx >> SHIFT_PER_LONG;
2023 src_idx &= (BITS_PER_LONG-1);
2024 bitcpy_rev(dst, dst_idx, src, src_idx, n);
2027 dst_idx += next_plane*8;
2028 src_idx += next_plane*8;
2033 static void amifb_copyarea(struct fb_info *info,
2034 const struct fb_copyarea *area)
2036 struct amifb_par *par = (struct amifb_par *)info->par;
2038 u32 dx, dy, sx, sy, width, height;
2039 unsigned long *dst, *src;
2040 int dst_idx, src_idx;
2043 /* clip the destination */
2044 x2 = area->dx + area->width;
2045 y2 = area->dy + area->height;
2046 dx = area->dx > 0 ? area->dx : 0;
2047 dy = area->dy > 0 ? area->dy : 0;
2048 x2 = x2 < info->var.xres_virtual ? x2 : info->var.xres_virtual;
2049 y2 = y2 < info->var.yres_virtual ? y2 : info->var.yres_virtual;
2054 sx = area->sx + (dx - area->dx);
2055 sy = area->sy + (dy - area->dy);
2057 /* the source must be completely inside the virtual screen */
2058 if (sx < 0 || sy < 0 || (sx + width) > info->var.xres_virtual ||
2059 (sy + height) > info->var.yres_virtual)
2062 if (dy > sy || (dy == sy && dx > sx)) {
2067 dst = (unsigned long *)
2068 ((unsigned long)info->screen_base & ~(BYTES_PER_LONG-1));
2070 dst_idx = ((unsigned long)info->screen_base & (BYTES_PER_LONG-1))*8;
2072 dst_idx += dy*par->next_line*8+dx;
2073 src_idx += sy*par->next_line*8+sx;
2076 dst_idx -= par->next_line*8;
2077 src_idx -= par->next_line*8;
2078 copy_one_line_rev(info->var.bits_per_pixel,
2079 par->next_plane, dst, dst_idx, src,
2084 copy_one_line(info->var.bits_per_pixel,
2085 par->next_plane, dst, dst_idx, src,
2087 dst_idx += par->next_line*8;
2088 src_idx += par->next_line*8;
2094 static inline void expand_one_line(int bpp, unsigned long next_plane,
2095 unsigned long *dst, int dst_idx, u32 n,
2096 const u8 *data, u32 bgcolor, u32 fgcolor)
2098 const unsigned long *src;
2102 dst += dst_idx >> SHIFT_PER_LONG;
2103 dst_idx &= (BITS_PER_LONG-1);
2104 if ((bgcolor ^ fgcolor) & 1) {
2105 src = (unsigned long *)((unsigned long)data & ~(BYTES_PER_LONG-1));
2106 src_idx = ((unsigned long)data & (BYTES_PER_LONG-1))*8;
2108 bitcpy(dst, dst_idx, src, src_idx, n);
2110 bitcpy_not(dst, dst_idx, src, src_idx, n);
2113 bitfill32(dst, dst_idx, fgcolor & 1 ? ~0 : 0, n);
2118 dst_idx += next_plane*8;
2123 static void amifb_imageblit(struct fb_info *info, const struct fb_image *image)
2125 struct amifb_par *par = (struct amifb_par *)info->par;
2130 u32 dx, dy, width, height, pitch;
2133 * We could use hardware clipping but on many cards you get around
2134 * hardware clipping by writing to framebuffer directly like we are
2137 x2 = image->dx + image->width;
2138 y2 = image->dy + image->height;
2141 x2 = x2 < info->var.xres_virtual ? x2 : info->var.xres_virtual;
2142 y2 = y2 < info->var.yres_virtual ? y2 : info->var.yres_virtual;
2146 if (image->depth == 1) {
2147 dst = (unsigned long *)
2148 ((unsigned long)info->screen_base & ~(BYTES_PER_LONG-1));
2149 dst_idx = ((unsigned long)info->screen_base & (BYTES_PER_LONG-1))*8;
2150 dst_idx += dy*par->next_line*8+dx;
2152 pitch = (image->width+7)/8;
2154 expand_one_line(info->var.bits_per_pixel,
2155 par->next_plane, dst, dst_idx, width,
2156 src, image->bg_color,
2158 dst_idx += par->next_line*8;
2162 c2p(info->screen_base, image->data, dx, dy, width, height,
2163 par->next_line, par->next_plane, image->width,
2164 info->var.bits_per_pixel);
2170 * Amiga Frame Buffer Specific ioctls
2173 static int amifb_ioctl(struct fb_info *info,
2174 unsigned int cmd, unsigned long arg)
2177 struct fb_fix_cursorinfo fix;
2178 struct fb_var_cursorinfo var;
2179 struct fb_cursorstate state;
2181 void __user *argp = (void __user *)arg;
2185 case FBIOGET_FCURSORINFO:
2186 i = ami_get_fix_cursorinfo(&crsr.fix);
2189 return copy_to_user(argp, &crsr.fix,
2190 sizeof(crsr.fix)) ? -EFAULT : 0;
2192 case FBIOGET_VCURSORINFO:
2193 i = ami_get_var_cursorinfo(&crsr.var,
2194 ((struct fb_var_cursorinfo __user *)arg)->data);
2197 return copy_to_user(argp, &crsr.var,
2198 sizeof(crsr.var)) ? -EFAULT : 0;
2200 case FBIOPUT_VCURSORINFO:
2201 if (copy_from_user(&crsr.var, argp, sizeof(crsr.var)))
2203 return ami_set_var_cursorinfo(&crsr.var,
2204 ((struct fb_var_cursorinfo __user *)arg)->data);
2206 case FBIOGET_CURSORSTATE:
2207 i = ami_get_cursorstate(&crsr.state);
2210 return copy_to_user(argp, &crsr.state,
2211 sizeof(crsr.state)) ? -EFAULT : 0;
2213 case FBIOPUT_CURSORSTATE:
2214 if (copy_from_user(&crsr.state, argp,
2215 sizeof(crsr.state)))
2217 return ami_set_cursorstate(&crsr.state);
2224 * Allocate, Clear and Align a Block of Chip Memory
2227 static u_long unaligned_chipptr = 0;
2229 static inline u_long __init chipalloc(u_long size)
2231 size += PAGE_SIZE-1;
2232 if (!(unaligned_chipptr = (u_long)amiga_chip_alloc(size,
2234 panic("No Chip RAM for frame buffer");
2235 memset((void *)unaligned_chipptr, 0, size);
2236 return PAGE_ALIGN(unaligned_chipptr);
2239 static inline void chipfree(void)
2241 if (unaligned_chipptr)
2242 amiga_chip_free((void *)unaligned_chipptr);
2250 int __init amifb_init(void)
2252 int tag, i, err = 0;
2257 char *option = NULL;
2259 if (fb_get_options("amifb", &option)) {
2263 amifb_setup(option);
2265 if (!MACH_IS_AMIGA || !AMIGAHW_PRESENT(AMI_VIDEO))
2269 * We request all registers starting from bplpt[0]
2271 if (!request_mem_region(CUSTOM_PHYSADDR+0xe0, 0x120,
2272 "amifb [Denise/Lisa]"))
2275 custom.dmacon = DMAF_ALL | DMAF_MASTER;
2277 switch (amiga_chipset) {
2278 #ifdef CONFIG_FB_AMIGA_OCS
2280 strcat(fb_info.fix.id, "OCS");
2283 maxdepth[TAG_SHRES] = 0; /* OCS means no SHRES */
2284 maxdepth[TAG_HIRES] = 4;
2285 maxdepth[TAG_LORES] = 6;
2286 maxfmode = TAG_FMODE_1;
2287 defmode = amiga_vblank == 50 ? DEFMODE_PAL
2289 fb_info.fix.smem_len = VIDEOMEMSIZE_OCS;
2291 #endif /* CONFIG_FB_AMIGA_OCS */
2293 #ifdef CONFIG_FB_AMIGA_ECS
2295 strcat(fb_info.fix.id, "ECS");
2297 maxdepth[TAG_SHRES] = 2;
2298 maxdepth[TAG_HIRES] = 4;
2299 maxdepth[TAG_LORES] = 6;
2300 maxfmode = TAG_FMODE_1;
2301 if (AMIGAHW_PRESENT(AMBER_FF))
2302 defmode = amiga_vblank == 50 ? DEFMODE_AMBER_PAL
2303 : DEFMODE_AMBER_NTSC;
2305 defmode = amiga_vblank == 50 ? DEFMODE_PAL
2307 if (amiga_chip_avail()-CHIPRAM_SAFETY_LIMIT >
2308 VIDEOMEMSIZE_ECS_1M)
2309 fb_info.fix.smem_len = VIDEOMEMSIZE_ECS_2M;
2311 fb_info.fix.smem_len = VIDEOMEMSIZE_ECS_1M;
2313 #endif /* CONFIG_FB_AMIGA_ECS */
2315 #ifdef CONFIG_FB_AMIGA_AGA
2317 strcat(fb_info.fix.id, "AGA");
2319 maxdepth[TAG_SHRES] = 8;
2320 maxdepth[TAG_HIRES] = 8;
2321 maxdepth[TAG_LORES] = 8;
2322 maxfmode = TAG_FMODE_4;
2323 defmode = DEFMODE_AGA;
2324 if (amiga_chip_avail()-CHIPRAM_SAFETY_LIMIT >
2325 VIDEOMEMSIZE_AGA_1M)
2326 fb_info.fix.smem_len = VIDEOMEMSIZE_AGA_2M;
2328 fb_info.fix.smem_len = VIDEOMEMSIZE_AGA_1M;
2330 #endif /* CONFIG_FB_AMIGA_AGA */
2333 #ifdef CONFIG_FB_AMIGA_OCS
2334 printk("Unknown graphics chipset, defaulting to OCS\n");
2335 strcat(fb_info.fix.id, "Unknown");
2336 goto default_chipset;
2337 #else /* CONFIG_FB_AMIGA_OCS */
2340 #endif /* CONFIG_FB_AMIGA_OCS */
2345 * Calculate the Pixel Clock Values for this Machine
2349 u_long tmp = DIVUL(200000000000ULL, amiga_eclock);
2351 pixclock[TAG_SHRES] = (tmp + 4) / 8; /* SHRES: 35 ns / 28 MHz */
2352 pixclock[TAG_HIRES] = (tmp + 2) / 4; /* HIRES: 70 ns / 14 MHz */
2353 pixclock[TAG_LORES] = (tmp + 1) / 2; /* LORES: 140 ns / 7 MHz */
2357 * Replace the Tag Values with the Real Pixel Clock Values
2360 for (i = 0; i < NUM_TOTAL_MODES; i++) {
2361 struct fb_videomode *mode = &ami_modedb[i];
2362 tag = mode->pixclock;
2363 if (tag == TAG_SHRES || tag == TAG_HIRES || tag == TAG_LORES) {
2364 mode->pixclock = pixclock[tag];
2369 * These monitor specs are for a typical Amiga monitor (e.g. A1960)
2371 if (fb_info.monspecs.hfmin == 0) {
2372 fb_info.monspecs.hfmin = 15000;
2373 fb_info.monspecs.hfmax = 38000;
2374 fb_info.monspecs.vfmin = 49;
2375 fb_info.monspecs.vfmax = 90;
2378 fb_info.fbops = &amifb_ops;
2379 fb_info.par = ¤tpar;
2380 fb_info.flags = FBINFO_DEFAULT;
2382 if (!fb_find_mode(&fb_info.var, &fb_info, mode_option, ami_modedb,
2383 NUM_TOTAL_MODES, &ami_modedb[defmode], 4)) {
2389 chipptr = chipalloc(fb_info.fix.smem_len+
2395 assignchunk(videomemory, u_long, chipptr, fb_info.fix.smem_len);
2396 assignchunk(spritememory, u_long, chipptr, SPRITEMEMSIZE);
2397 assignchunk(dummysprite, u_short *, chipptr, DUMMYSPRITEMEMSIZE);
2398 assignchunk(copdisplay.init, copins *, chipptr, COPINITSIZE);
2399 assignchunk(copdisplay.list[0][0], copins *, chipptr, COPLISTSIZE);
2400 assignchunk(copdisplay.list[0][1], copins *, chipptr, COPLISTSIZE);
2401 assignchunk(copdisplay.list[1][0], copins *, chipptr, COPLISTSIZE);
2402 assignchunk(copdisplay.list[1][1], copins *, chipptr, COPLISTSIZE);
2405 * access the videomem with writethrough cache
2407 fb_info.fix.smem_start = (u_long)ZTWO_PADDR(videomemory);
2408 videomemory = (u_long)ioremap_writethrough(fb_info.fix.smem_start,
2409 fb_info.fix.smem_len);
2411 printk("amifb: WARNING! unable to map videomem cached writethrough\n");
2412 videomemory = ZTWO_VADDR(fb_info.fix.smem_start);
2415 fb_info.screen_base = (char *)videomemory;
2416 memset(dummysprite, 0, DUMMYSPRITEMEMSIZE);
2419 * Enable Display DMA
2422 custom.dmacon = DMAF_SETCLR | DMAF_MASTER | DMAF_RASTER | DMAF_COPPER |
2423 DMAF_BLITTER | DMAF_SPRITE;
2426 * Make sure the Copper has something to do
2431 if (request_irq(IRQ_AMIGA_COPPER, amifb_interrupt, 0,
2432 "fb vertb handler", ¤tpar)) {
2437 fb_alloc_cmap(&fb_info.cmap, 1<<fb_info.var.bits_per_pixel, 0);
2439 if (register_framebuffer(&fb_info) < 0) {
2444 printk("fb%d: %s frame buffer device, using %dK of video memory\n",
2445 fb_info.node, fb_info.fix.id, fb_info.fix.smem_len>>10);
2454 static void amifb_deinit(void)
2456 fb_dealloc_cmap(&fb_info.cmap);
2458 release_mem_region(CUSTOM_PHYSADDR+0xe0, 0x120);
2459 custom.dmacon = DMAF_ALL | DMAF_MASTER;
2464 * Blank the display.
2467 static int amifb_blank(int blank, struct fb_info *info)
2469 do_blank = blank ? blank : -1;
2475 * Flash the cursor (called by VBlank interrupt)
2478 static int flash_cursor(void)
2480 static int cursorcount = 1;
2482 if (cursormode == FB_CURSOR_FLASH) {
2483 if (!--cursorcount) {
2484 cursorstate = -cursorstate;
2485 cursorcount = cursorrate;
2494 * VBlank Display Interrupt
2497 static irqreturn_t amifb_interrupt(int irq, void *dev_id, struct pt_regs *fp)
2499 if (do_vmode_pan || do_vmode_full)
2500 ami_update_display();
2507 ami_rebuild_copper();
2508 do_cursor = do_vmode_pan = 0;
2509 } else if (do_cursor) {
2523 if (do_vmode_full) {
2524 ami_reinit_copper();
2530 /* --------------------------- Hardware routines --------------------------- */
2533 * Get the video params out of `var'. If a value doesn't fit, round
2534 * it up, if it's too big, return -EINVAL.
2537 static int ami_decode_var(struct fb_var_screeninfo *var,
2538 struct amifb_par *par)
2540 u_short clk_shift, line_shift;
2541 u_long maxfetchstop, fstrt, fsize, fconst, xres_n, yres_n;
2542 u_int htotal, vtotal;
2545 * Find a matching Pixel Clock
2548 for (clk_shift = TAG_SHRES; clk_shift <= TAG_LORES; clk_shift++)
2549 if (var->pixclock <= pixclock[clk_shift])
2551 if (clk_shift > TAG_LORES) {
2552 DPRINTK("pixclock too high\n");
2555 par->clk_shift = clk_shift;
2558 * Check the Geometry Values
2561 if ((par->xres = var->xres) < 64)
2563 if ((par->yres = var->yres) < 64)
2565 if ((par->vxres = var->xres_virtual) < par->xres)
2566 par->vxres = par->xres;
2567 if ((par->vyres = var->yres_virtual) < par->yres)
2568 par->vyres = par->yres;
2570 par->bpp = var->bits_per_pixel;
2574 if (par->bpp > maxdepth[clk_shift]) {
2575 if (round_down_bpp && maxdepth[clk_shift])
2576 par->bpp = maxdepth[clk_shift];
2578 DPRINTK("invalid bpp\n");
2582 } else if (var->nonstd == FB_NONSTD_HAM) {
2585 if (par->bpp != 6) {
2588 if (par->bpp != 8 || !IS_AGA) {
2589 DPRINTK("invalid bpp for ham mode\n");
2594 DPRINTK("unknown nonstd mode\n");
2599 * FB_VMODE_SMOOTH_XPAN will be cleared, if one of the folloing
2600 * checks failed and smooth scrolling is not possible
2603 par->vmode = var->vmode | FB_VMODE_SMOOTH_XPAN;
2604 switch (par->vmode & FB_VMODE_MASK) {
2605 case FB_VMODE_INTERLACED:
2608 case FB_VMODE_NONINTERLACED:
2611 case FB_VMODE_DOUBLE:
2613 DPRINTK("double mode only possible with aga\n");
2619 DPRINTK("unknown video mode\n");
2623 par->line_shift = line_shift;
2626 * Vertical and Horizontal Timings
2629 xres_n = par->xres<<clk_shift;
2630 yres_n = par->yres<<line_shift;
2631 par->htotal = down8((var->left_margin+par->xres+var->right_margin+var->hsync_len)<<clk_shift);
2632 par->vtotal = down2(((var->upper_margin+par->yres+var->lower_margin+var->vsync_len)<<line_shift)+1);
2635 par->bplcon3 = sprpixmode[clk_shift];
2638 if (var->sync & FB_SYNC_BROADCAST) {
2639 par->diwstop_h = par->htotal-((var->right_margin-var->hsync_len)<<clk_shift);
2641 par->diwstop_h += mod4(var->hsync_len);
2643 par->diwstop_h = down4(par->diwstop_h);
2645 par->diwstrt_h = par->diwstop_h - xres_n;
2646 par->diwstop_v = par->vtotal-((var->lower_margin-var->vsync_len)<<line_shift);
2647 par->diwstrt_v = par->diwstop_v - yres_n;
2648 if (par->diwstop_h >= par->htotal+8) {
2649 DPRINTK("invalid diwstop_h\n");
2652 if (par->diwstop_v > par->vtotal) {
2653 DPRINTK("invalid diwstop_v\n");
2658 /* Initialize sync with some reasonable values for pwrsave */
2669 if (par->vtotal > (PAL_VTOTAL+NTSC_VTOTAL)/2) {
2670 /* PAL video mode */
2671 if (par->htotal != PAL_HTOTAL) {
2672 DPRINTK("htotal invalid for pal\n");
2675 if (par->diwstrt_h < PAL_DIWSTRT_H) {
2676 DPRINTK("diwstrt_h too low for pal\n");
2679 if (par->diwstrt_v < PAL_DIWSTRT_V) {
2680 DPRINTK("diwstrt_v too low for pal\n");
2683 htotal = PAL_HTOTAL>>clk_shift;
2684 vtotal = PAL_VTOTAL>>1;
2686 par->beamcon0 = BMC0_PAL;
2687 par->bplcon3 |= BPC3_BRDRBLNK;
2688 } else if (AMIGAHW_PRESENT(AGNUS_HR_PAL) ||
2689 AMIGAHW_PRESENT(AGNUS_HR_NTSC)) {
2690 par->beamcon0 = BMC0_PAL;
2692 } else if (amiga_vblank != 50) {
2693 DPRINTK("pal not supported by this chipset\n");
2698 * In the AGA chipset seems to be hardware bug with BPC3_BRDRBLNK
2699 * and NTSC activated, so than better let diwstop_h <= 1812
2701 if (par->htotal != NTSC_HTOTAL) {
2702 DPRINTK("htotal invalid for ntsc\n");
2705 if (par->diwstrt_h < NTSC_DIWSTRT_H) {
2706 DPRINTK("diwstrt_h too low for ntsc\n");
2709 if (par->diwstrt_v < NTSC_DIWSTRT_V) {
2710 DPRINTK("diwstrt_v too low for ntsc\n");
2713 htotal = NTSC_HTOTAL>>clk_shift;
2714 vtotal = NTSC_VTOTAL>>1;
2717 par->bplcon3 |= BPC3_BRDRBLNK;
2718 } else if (AMIGAHW_PRESENT(AGNUS_HR_PAL) ||
2719 AMIGAHW_PRESENT(AGNUS_HR_NTSC)) {
2722 } else if (amiga_vblank != 60) {
2723 DPRINTK("ntsc not supported by this chipset\n");
2728 if (par->diwstrt_h >= 1024 || par->diwstop_h < 1024 ||
2729 par->diwstrt_v >= 512 || par->diwstop_v < 256) {
2730 DPRINTK("invalid position for display on ocs\n");
2734 } else if (!IS_OCS) {
2735 /* Programmable video mode */
2736 par->hsstrt = var->right_margin<<clk_shift;
2737 par->hsstop = (var->right_margin+var->hsync_len)<<clk_shift;
2738 par->diwstop_h = par->htotal - mod8(par->hsstrt) + 8 - (1 << clk_shift);
2740 par->diwstop_h = down4(par->diwstop_h) - 16;
2741 par->diwstrt_h = par->diwstop_h - xres_n;
2742 par->hbstop = par->diwstrt_h + 4;
2743 par->hbstrt = par->diwstop_h + 4;
2744 if (par->hbstrt >= par->htotal + 8)
2745 par->hbstrt -= par->htotal;
2746 par->hcenter = par->hsstrt + (par->htotal >> 1);
2747 par->vsstrt = var->lower_margin<<line_shift;
2748 par->vsstop = (var->lower_margin+var->vsync_len)<<line_shift;
2749 par->diwstop_v = par->vtotal;
2750 if ((par->vmode & FB_VMODE_MASK) == FB_VMODE_INTERLACED)
2751 par->diwstop_v -= 2;
2752 par->diwstrt_v = par->diwstop_v - yres_n;
2753 par->vbstop = par->diwstrt_v - 2;
2754 par->vbstrt = par->diwstop_v - 2;
2755 if (par->vtotal > 2048) {
2756 DPRINTK("vtotal too high\n");
2759 if (par->htotal > 2048) {
2760 DPRINTK("htotal too high\n");
2763 par->bplcon3 |= BPC3_EXTBLKEN;
2764 par->beamcon0 = BMC0_HARDDIS | BMC0_VARVBEN | BMC0_LOLDIS |
2765 BMC0_VARVSYEN | BMC0_VARHSYEN | BMC0_VARBEAMEN |
2766 BMC0_PAL | BMC0_VARCSYEN;
2767 if (var->sync & FB_SYNC_HOR_HIGH_ACT)
2768 par->beamcon0 |= BMC0_HSYTRUE;
2769 if (var->sync & FB_SYNC_VERT_HIGH_ACT)
2770 par->beamcon0 |= BMC0_VSYTRUE;
2771 if (var->sync & FB_SYNC_COMP_HIGH_ACT)
2772 par->beamcon0 |= BMC0_CSYTRUE;
2773 htotal = par->htotal>>clk_shift;
2774 vtotal = par->vtotal>>1;
2776 DPRINTK("only broadcast modes possible for ocs\n");
2781 * Checking the DMA timing
2784 fconst = 16<<maxfmode<<clk_shift;
2787 * smallest window start value without turn off other dma cycles
2788 * than sprite1-7, unless you change min_fstrt
2792 fsize = ((maxfmode+clk_shift <= 1) ? fconst : 64);
2793 fstrt = downx(fconst, par->diwstrt_h-4) - fsize;
2794 if (fstrt < min_fstrt) {
2795 DPRINTK("fetch start too low\n");
2800 * smallest window start value where smooth scrolling is possible
2803 fstrt = downx(fconst, par->diwstrt_h-fconst+(1<<clk_shift)-4) - fsize;
2804 if (fstrt < min_fstrt)
2805 par->vmode &= ~FB_VMODE_SMOOTH_XPAN;
2807 maxfetchstop = down16(par->htotal - 80);
2809 fstrt = downx(fconst, par->diwstrt_h-4) - 64 - fconst;
2810 fsize = upx(fconst, xres_n + modx(fconst, downx(1<<clk_shift, par->diwstrt_h-4)));
2811 if (fstrt + fsize > maxfetchstop)
2812 par->vmode &= ~FB_VMODE_SMOOTH_XPAN;
2814 fsize = upx(fconst, xres_n);
2815 if (fstrt + fsize > maxfetchstop) {
2816 DPRINTK("fetch stop too high\n");
2820 if (maxfmode + clk_shift <= 1) {
2821 fsize = up64(xres_n + fconst - 1);
2822 if (min_fstrt + fsize - 64 > maxfetchstop)
2823 par->vmode &= ~FB_VMODE_SMOOTH_XPAN;
2825 fsize = up64(xres_n);
2826 if (min_fstrt + fsize - 64 > maxfetchstop) {
2827 DPRINTK("fetch size too high\n");
2836 * Check if there is enough time to update the bitplane pointers for ywrap
2839 if (par->htotal-fsize-64 < par->bpp*64)
2840 par->vmode &= ~FB_VMODE_YWRAP;
2843 * Bitplane calculations and check the Memory Requirements
2847 par->next_plane = div8(upx(16<<maxfmode, par->vxres));
2848 par->next_line = par->bpp*par->next_plane;
2849 if (par->next_line * par->vyres > fb_info.fix.smem_len) {
2850 DPRINTK("too few video mem\n");
2854 par->next_line = div8(upx(16<<maxfmode, par->vxres));
2855 par->next_plane = par->vyres*par->next_line;
2856 if (par->next_plane * par->bpp > fb_info.fix.smem_len) {
2857 DPRINTK("too few video mem\n");
2863 * Hardware Register Values
2866 par->bplcon0 = BPC0_COLOR | bplpixmode[clk_shift];
2868 par->bplcon0 |= BPC0_ECSENA;
2870 par->bplcon0 |= BPC0_BPU3;
2872 par->bplcon0 |= par->bpp<<12;
2873 if (var->nonstd == FB_NONSTD_HAM)
2874 par->bplcon0 |= BPC0_HAM;
2875 if (var->sync & FB_SYNC_EXT)
2876 par->bplcon0 |= BPC0_ERSY;
2879 par->fmode = bplfetchmode[maxfmode];
2881 switch (par->vmode & FB_VMODE_MASK) {
2882 case FB_VMODE_INTERLACED:
2883 par->bplcon0 |= BPC0_LACE;
2885 case FB_VMODE_DOUBLE:
2887 par->fmode |= FMODE_SSCAN2 | FMODE_BSCAN2;
2891 if (!((par->vmode ^ var->vmode) & FB_VMODE_YWRAP)) {
2892 par->xoffset = var->xoffset;
2893 par->yoffset = var->yoffset;
2894 if (par->vmode & FB_VMODE_YWRAP) {
2895 if (par->xoffset || par->yoffset < 0 || par->yoffset >= par->vyres)
2896 par->xoffset = par->yoffset = 0;
2898 if (par->xoffset < 0 || par->xoffset > upx(16<<maxfmode, par->vxres-par->xres) ||
2899 par->yoffset < 0 || par->yoffset > par->vyres-par->yres)
2900 par->xoffset = par->yoffset = 0;
2903 par->xoffset = par->yoffset = 0;
2905 par->crsr.crsr_x = par->crsr.crsr_y = 0;
2906 par->crsr.spot_x = par->crsr.spot_y = 0;
2907 par->crsr.height = par->crsr.width = 0;
2909 #if 0 /* fbmon not done. uncomment for 2.5.x -brad */
2910 if (!fbmon_valid_timings(pixclock[clk_shift], htotal, vtotal,
2912 DPRINTK("mode doesn't fit for monitor\n");
2921 * Fill the `var' structure based on the values in `par' and maybe
2922 * other values read out of the hardware.
2925 static int ami_encode_var(struct fb_var_screeninfo *var,
2926 struct amifb_par *par)
2928 u_short clk_shift, line_shift;
2930 memset(var, 0, sizeof(struct fb_var_screeninfo));
2932 clk_shift = par->clk_shift;
2933 line_shift = par->line_shift;
2935 var->xres = par->xres;
2936 var->yres = par->yres;
2937 var->xres_virtual = par->vxres;
2938 var->yres_virtual = par->vyres;
2939 var->xoffset = par->xoffset;
2940 var->yoffset = par->yoffset;
2942 var->bits_per_pixel = par->bpp;
2945 var->red.offset = 0;
2946 var->red.msb_right = 0;
2947 var->red.length = par->bpp;
2948 if (par->bplcon0 & BPC0_HAM)
2949 var->red.length -= 2;
2950 var->blue = var->green = var->red;
2951 var->transp.offset = 0;
2952 var->transp.length = 0;
2953 var->transp.msb_right = 0;
2955 if (par->bplcon0 & BPC0_HAM)
2956 var->nonstd = FB_NONSTD_HAM;
2964 var->pixclock = pixclock[clk_shift];
2966 if (IS_AGA && par->fmode & FMODE_BSCAN2)
2967 var->vmode = FB_VMODE_DOUBLE;
2968 else if (par->bplcon0 & BPC0_LACE)
2969 var->vmode = FB_VMODE_INTERLACED;
2971 var->vmode = FB_VMODE_NONINTERLACED;
2973 if (!IS_OCS && par->beamcon0 & BMC0_VARBEAMEN) {
2974 var->hsync_len = (par->hsstop-par->hsstrt)>>clk_shift;
2975 var->right_margin = par->hsstrt>>clk_shift;
2976 var->left_margin = (par->htotal>>clk_shift) - var->xres - var->right_margin - var->hsync_len;
2977 var->vsync_len = (par->vsstop-par->vsstrt)>>line_shift;
2978 var->lower_margin = par->vsstrt>>line_shift;
2979 var->upper_margin = (par->vtotal>>line_shift) - var->yres - var->lower_margin - var->vsync_len;
2981 if (par->beamcon0 & BMC0_HSYTRUE)
2982 var->sync |= FB_SYNC_HOR_HIGH_ACT;
2983 if (par->beamcon0 & BMC0_VSYTRUE)
2984 var->sync |= FB_SYNC_VERT_HIGH_ACT;
2985 if (par->beamcon0 & BMC0_CSYTRUE)
2986 var->sync |= FB_SYNC_COMP_HIGH_ACT;
2988 var->sync = FB_SYNC_BROADCAST;
2989 var->hsync_len = (152>>clk_shift) + mod4(par->diwstop_h);
2990 var->right_margin = ((par->htotal - down4(par->diwstop_h))>>clk_shift) + var->hsync_len;
2991 var->left_margin = (par->htotal>>clk_shift) - var->xres - var->right_margin - var->hsync_len;
2992 var->vsync_len = 4>>line_shift;
2993 var->lower_margin = ((par->vtotal - par->diwstop_v)>>line_shift) + var->vsync_len;
2994 var->upper_margin = (((par->vtotal - 2)>>line_shift) + 1) - var->yres -
2995 var->lower_margin - var->vsync_len;
2998 if (par->bplcon0 & BPC0_ERSY)
2999 var->sync |= FB_SYNC_EXT;
3000 if (par->vmode & FB_VMODE_YWRAP)
3001 var->vmode |= FB_VMODE_YWRAP;
3008 * Pan or Wrap the Display
3010 * This call looks only at xoffset, yoffset and the FB_VMODE_YWRAP flag
3014 static void ami_pan_var(struct fb_var_screeninfo *var)
3016 struct amifb_par *par = ¤tpar;
3018 par->xoffset = var->xoffset;
3019 par->yoffset = var->yoffset;
3020 if (var->vmode & FB_VMODE_YWRAP)
3021 par->vmode |= FB_VMODE_YWRAP;
3023 par->vmode &= ~FB_VMODE_YWRAP;
3034 static int ami_update_par(void)
3036 struct amifb_par *par = ¤tpar;
3037 short clk_shift, vshift, fstrt, fsize, fstop, fconst, shift, move, mod;
3039 clk_shift = par->clk_shift;
3041 if (!(par->vmode & FB_VMODE_SMOOTH_XPAN))
3042 par->xoffset = upx(16<<maxfmode, par->xoffset);
3044 fconst = 16<<maxfmode<<clk_shift;
3045 vshift = modx(16<<maxfmode, par->xoffset);
3046 fstrt = par->diwstrt_h - (vshift<<clk_shift) - 4;
3047 fsize = (par->xres+vshift)<<clk_shift;
3048 shift = modx(fconst, fstrt);
3049 move = downx(2<<maxfmode, div8(par->xoffset));
3050 if (maxfmode + clk_shift > 1) {
3051 fstrt = downx(fconst, fstrt) - 64;
3052 fsize = upx(fconst, fsize);
3053 fstop = fstrt + fsize - fconst;
3055 mod = fstrt = downx(fconst, fstrt) - fconst;
3056 fstop = fstrt + upx(fconst, fsize) - 64;
3057 fsize = up64(fsize);
3058 fstrt = fstop - fsize + 64;
3059 if (fstrt < min_fstrt) {
3060 fstop += min_fstrt - fstrt;
3063 move = move - div8((mod-fstrt)>>clk_shift);
3065 mod = par->next_line - div8(fsize>>clk_shift);
3066 par->ddfstrt = fstrt;
3067 par->ddfstop = fstop;
3068 par->bplcon1 = hscroll2hw(shift);
3070 if (par->bplcon0 & BPC0_LACE)
3071 par->bpl2mod += par->next_line;
3072 if (IS_AGA && (par->fmode & FMODE_BSCAN2))
3073 par->bpl1mod = -div8(fsize>>clk_shift);
3075 par->bpl1mod = par->bpl2mod;
3078 par->bplpt0 = fb_info.fix.smem_start + par->next_line*par->yoffset + move;
3079 if (par->vmode & FB_VMODE_YWRAP) {
3080 if (par->yoffset > par->vyres-par->yres) {
3081 par->bplpt0wrap = fb_info.fix.smem_start + move;
3082 if (par->bplcon0 & BPC0_LACE && mod2(par->diwstrt_v+par->vyres-par->yoffset))
3083 par->bplpt0wrap += par->next_line;
3087 par->bplpt0 = fb_info.fix.smem_start + move;
3089 if (par->bplcon0 & BPC0_LACE && mod2(par->diwstrt_v))
3090 par->bplpt0 += par->next_line;
3097 * Set a single color register. The values supplied are already
3098 * rounded down to the hardware's capabilities (according to the
3099 * entries in the var structure). Return != 0 for invalid regno.
3102 static int amifb_setcolreg(u_int regno, u_int red, u_int green, u_int blue,
3103 u_int transp, struct fb_info *info)
3108 } else if (currentpar.bplcon0 & BPC0_SHRES) {
3125 * Update the corresponding Hardware Color Register, unless it's Color
3126 * Register 0 and the screen is blanked.
3128 * VBlank is switched off to protect bplcon3 or ecs_palette[] from
3129 * being changed by ami_do_blank() during the VBlank.
3132 if (regno || !is_blanked) {
3133 #if defined(CONFIG_FB_AMIGA_AGA)
3135 u_short bplcon3 = currentpar.bplcon3;
3137 custom.bplcon3 = bplcon3 | (regno<<8 & 0xe000);
3138 custom.color[regno&31] = rgb2hw8_high(red, green, blue);
3139 custom.bplcon3 = bplcon3 | (regno<<8 & 0xe000) | BPC3_LOCT;
3140 custom.color[regno&31] = rgb2hw8_low(red, green, blue);
3141 custom.bplcon3 = bplcon3;
3145 #if defined(CONFIG_FB_AMIGA_ECS)
3146 if (currentpar.bplcon0 & BPC0_SHRES) {
3147 u_short color, mask;
3151 color = rgb2hw2(red, green, blue);
3153 for (i = regno+12; i >= (int)regno; i -= 4)
3154 custom.color[i] = ecs_palette[i] = (ecs_palette[i] & mask) | color;
3155 mask <<=2; color >>= 2;
3156 regno = down16(regno)+mul4(mod4(regno));
3157 for (i = regno+3; i >= (int)regno; i--)
3158 custom.color[i] = ecs_palette[i] = (ecs_palette[i] & mask) | color;
3162 custom.color[regno] = rgb2hw4(red, green, blue);
3167 static void ami_update_display(void)
3169 struct amifb_par *par = ¤tpar;
3171 custom.bplcon1 = par->bplcon1;
3172 custom.bpl1mod = par->bpl1mod;
3173 custom.bpl2mod = par->bpl2mod;
3174 custom.ddfstrt = ddfstrt2hw(par->ddfstrt);
3175 custom.ddfstop = ddfstop2hw(par->ddfstop);
3179 * Change the video mode (called by VBlank interrupt)
3182 static void ami_init_display(void)
3184 struct amifb_par *par = ¤tpar;
3187 custom.bplcon0 = par->bplcon0 & ~BPC0_LACE;
3188 custom.bplcon2 = (IS_OCS ? 0 : BPC2_KILLEHB) | BPC2_PF2P2 | BPC2_PF1P2;
3190 custom.bplcon3 = par->bplcon3;
3192 custom.bplcon4 = BPC4_ESPRM4 | BPC4_OSPRM4;
3193 if (par->beamcon0 & BMC0_VARBEAMEN) {
3194 custom.htotal = htotal2hw(par->htotal);
3195 custom.hbstrt = hbstrt2hw(par->hbstrt);
3196 custom.hbstop = hbstop2hw(par->hbstop);
3197 custom.hsstrt = hsstrt2hw(par->hsstrt);
3198 custom.hsstop = hsstop2hw(par->hsstop);
3199 custom.hcenter = hcenter2hw(par->hcenter);
3200 custom.vtotal = vtotal2hw(par->vtotal);
3201 custom.vbstrt = vbstrt2hw(par->vbstrt);
3202 custom.vbstop = vbstop2hw(par->vbstop);
3203 custom.vsstrt = vsstrt2hw(par->vsstrt);
3204 custom.vsstop = vsstop2hw(par->vsstop);
3207 if (!IS_OCS || par->hsstop)
3208 custom.beamcon0 = par->beamcon0;
3210 custom.fmode = par->fmode;
3213 * The minimum period for audio depends on htotal
3216 amiga_audio_min_period = div16(par->htotal);
3218 is_lace = par->bplcon0 & BPC0_LACE ? 1 : 0;
3221 i = custom.vposr >> 15;
3223 custom.vposw = custom.vposr | 0x8000;
3228 custom.vposw = custom.vposr | 0x8000;
3230 custom.cop2lc = (u_short *)ZTWO_PADDR(copdisplay.list[currentcop][i]);
3234 * (Un)Blank the screen (called by VBlank interrupt)
3237 static void ami_do_blank(void)
3239 struct amifb_par *par = ¤tpar;
3240 #if defined(CONFIG_FB_AMIGA_AGA)
3241 u_short bplcon3 = par->bplcon3;
3243 u_char red, green, blue;
3246 custom.dmacon = DMAF_RASTER | DMAF_SPRITE;
3247 red = green = blue = 0;
3248 if (!IS_OCS && do_blank > 1) {
3250 case FB_BLANK_VSYNC_SUSPEND:
3251 custom.hsstrt = hsstrt2hw(par->hsstrt);
3252 custom.hsstop = hsstop2hw(par->hsstop);
3253 custom.vsstrt = vsstrt2hw(par->vtotal+4);
3254 custom.vsstop = vsstop2hw(par->vtotal+4);
3256 case FB_BLANK_HSYNC_SUSPEND:
3257 custom.hsstrt = hsstrt2hw(par->htotal+16);
3258 custom.hsstop = hsstop2hw(par->htotal+16);
3259 custom.vsstrt = vsstrt2hw(par->vsstrt);
3260 custom.vsstop = vsstrt2hw(par->vsstop);
3262 case FB_BLANK_POWERDOWN:
3263 custom.hsstrt = hsstrt2hw(par->htotal+16);
3264 custom.hsstop = hsstop2hw(par->htotal+16);
3265 custom.vsstrt = vsstrt2hw(par->vtotal+4);
3266 custom.vsstop = vsstop2hw(par->vtotal+4);
3269 if (!(par->beamcon0 & BMC0_VARBEAMEN)) {
3270 custom.htotal = htotal2hw(par->htotal);
3271 custom.vtotal = vtotal2hw(par->vtotal);
3272 custom.beamcon0 = BMC0_HARDDIS | BMC0_VARBEAMEN |
3273 BMC0_VARVSYEN | BMC0_VARHSYEN | BMC0_VARCSYEN;
3277 custom.dmacon = DMAF_SETCLR | DMAF_RASTER | DMAF_SPRITE;
3282 custom.hsstrt = hsstrt2hw(par->hsstrt);
3283 custom.hsstop = hsstop2hw(par->hsstop);
3284 custom.vsstrt = vsstrt2hw(par->vsstrt);
3285 custom.vsstop = vsstop2hw(par->vsstop);
3286 custom.beamcon0 = par->beamcon0;
3289 #if defined(CONFIG_FB_AMIGA_AGA)
3291 custom.bplcon3 = bplcon3;
3292 custom.color[0] = rgb2hw8_high(red, green, blue);
3293 custom.bplcon3 = bplcon3 | BPC3_LOCT;
3294 custom.color[0] = rgb2hw8_low(red, green, blue);
3295 custom.bplcon3 = bplcon3;
3298 #if defined(CONFIG_FB_AMIGA_ECS)
3299 if (par->bplcon0 & BPC0_SHRES) {
3300 u_short color, mask;
3304 color = rgb2hw2(red, green, blue);
3305 for (i = 12; i >= 0; i -= 4)
3306 custom.color[i] = ecs_palette[i] = (ecs_palette[i] & mask) | color;
3307 mask <<=2; color >>= 2;
3308 for (i = 3; i >= 0; i--)
3309 custom.color[i] = ecs_palette[i] = (ecs_palette[i] & mask) | color;
3312 custom.color[0] = rgb2hw4(red, green, blue);
3313 is_blanked = do_blank > 0 ? do_blank : 0;
3316 static int ami_get_fix_cursorinfo(struct fb_fix_cursorinfo *fix)
3318 struct amifb_par *par = ¤tpar;
3320 fix->crsr_width = fix->crsr_xsize = par->crsr.width;
3321 fix->crsr_height = fix->crsr_ysize = par->crsr.height;
3322 fix->crsr_color1 = 17;
3323 fix->crsr_color2 = 18;
3327 static int ami_get_var_cursorinfo(struct fb_var_cursorinfo *var, u_char __user *data)
3329 struct amifb_par *par = ¤tpar;
3330 register u_short *lspr, *sspr;
3332 register u_long datawords asm ("d2");
3334 register u_long datawords;
3336 register short delta;
3337 register u_char color;
3338 short height, width, bits, words;
3341 size = par->crsr.height*par->crsr.width;
3342 alloc = var->height*var->width;
3343 var->height = par->crsr.height;
3344 var->width = par->crsr.width;
3345 var->xspot = par->crsr.spot_x;
3346 var->yspot = par->crsr.spot_y;
3347 if (size > var->height*var->width)
3348 return -ENAMETOOLONG;
3349 if (!access_ok(VERIFY_WRITE, data, size))
3351 delta = 1<<par->crsr.fmode;
3352 lspr = lofsprite + (delta<<1);
3353 if (par->bplcon0 & BPC0_LACE)
3354 sspr = shfsprite + (delta<<1);
3357 for (height = (short)var->height-1; height >= 0; height--) {
3358 bits = 0; words = delta; datawords = 0;
3359 for (width = (short)var->width-1; width >= 0; width--) {
3363 asm volatile ("movew %1@(%3:w:2),%0 ; swap %0 ; movew %1@+,%0"
3364 : "=d" (datawords), "=a" (lspr) : "1" (lspr), "d" (delta));
3366 datawords = (*(lspr+delta) << 16) | (*lspr++);
3372 "clrb %0 ; swap %1 ; lslw #1,%1 ; roxlb #1,%0 ; "
3373 "swap %1 ; lslw #1,%1 ; roxlb #1,%0"
3374 : "=d" (color), "=d" (datawords) : "1" (datawords));
3376 color = (((datawords >> 30) & 2)
3377 | ((datawords >> 15) & 1));
3380 put_user(color, data++);
3385 while (--words >= 0)
3388 asm volatile ("lea %0@(%4:w:2),%0 ; tstl %1 ; jeq 1f ; exg %0,%1\n1:"
3389 : "=a" (lspr), "=a" (sspr) : "0" (lspr), "1" (sspr), "d" (delta));
3393 u_short *tmp = lspr;
3402 static int ami_set_var_cursorinfo(struct fb_var_cursorinfo *var, u_char __user *data)
3404 struct amifb_par *par = ¤tpar;
3405 register u_short *lspr, *sspr;
3407 register u_long datawords asm ("d2");
3409 register u_long datawords;
3411 register short delta;
3413 short height, width, bits, words;
3417 else if (var->width <= 16)
3418 fmode = TAG_FMODE_1;
3419 else if (var->width <= 32)
3420 fmode = TAG_FMODE_2;
3421 else if (var->width <= 64)
3422 fmode = TAG_FMODE_4;
3425 if (fmode > maxfmode)
3429 if (!access_ok(VERIFY_READ, data, var->width*var->height))
3432 lofsprite = shfsprite = (u_short *)spritememory;
3433 lspr = lofsprite + (delta<<1);
3434 if (par->bplcon0 & BPC0_LACE) {
3435 if (((var->height+4)<<fmode<<2) > SPRITEMEMSIZE)
3437 memset(lspr, 0, (var->height+4)<<fmode<<2);
3438 shfsprite += ((var->height+5)&-2)<<fmode;
3439 sspr = shfsprite + (delta<<1);
3441 if (((var->height+2)<<fmode<<2) > SPRITEMEMSIZE)
3443 memset(lspr, 0, (var->height+2)<<fmode<<2);
3446 for (height = (short)var->height-1; height >= 0; height--) {
3447 bits = 16; words = delta; datawords = 0;
3448 for (width = (short)var->width-1; width >= 0; width--) {
3449 unsigned long tdata = 0;
3450 get_user(tdata, data);
3454 "lsrb #1,%2 ; roxlw #1,%0 ; swap %0 ; "
3455 "lsrb #1,%2 ; roxlw #1,%0 ; swap %0"
3457 : "0" (datawords), "d" (tdata));
3459 datawords = ((datawords << 1) & 0xfffefffe);
3460 datawords |= tdata & 1;
3461 datawords |= (tdata & 2) << (16-1);
3466 asm volatile ("swap %2 ; movew %2,%0@(%3:w:2) ; swap %2 ; movew %2,%0@+"
3467 : "=a" (lspr) : "0" (lspr), "d" (datawords), "d" (delta));
3469 *(lspr+delta) = (u_short) (datawords >> 16);
3470 *lspr++ = (u_short) (datawords & 0xffff);
3478 "swap %2 ; lslw %4,%2 ; movew %2,%0@(%3:w:2) ; "
3479 "swap %2 ; lslw %4,%2 ; movew %2,%0@+"
3480 : "=a" (lspr) : "0" (lspr), "d" (datawords), "d" (delta), "d" (bits));
3482 *(lspr+delta) = (u_short) (datawords >> (16+bits));
3483 *lspr++ = (u_short) ((datawords & 0x0000ffff) >> bits);
3486 while (--words >= 0) {
3488 asm volatile ("moveql #0,%%d0 ; movew %%d0,%0@(%2:w:2) ; movew %%d0,%0@+"
3489 : "=a" (lspr) : "0" (lspr), "d" (delta) : "d0");
3496 asm volatile ("lea %0@(%4:w:2),%0 ; tstl %1 ; jeq 1f ; exg %0,%1\n1:"
3497 : "=a" (lspr), "=a" (sspr) : "0" (lspr), "1" (sspr), "d" (delta));
3501 u_short *tmp = lspr;
3507 par->crsr.height = var->height;
3508 par->crsr.width = var->width;
3509 par->crsr.spot_x = var->xspot;
3510 par->crsr.spot_y = var->yspot;
3511 par->crsr.fmode = fmode;
3513 par->fmode &= ~(FMODE_SPAGEM | FMODE_SPR32);
3514 par->fmode |= sprfetchmode[fmode];
3515 custom.fmode = par->fmode;
3520 static int ami_get_cursorstate(struct fb_cursorstate *state)
3522 struct amifb_par *par = ¤tpar;
3524 state->xoffset = par->crsr.crsr_x;
3525 state->yoffset = par->crsr.crsr_y;
3526 state->mode = cursormode;
3530 static int ami_set_cursorstate(struct fb_cursorstate *state)
3532 struct amifb_par *par = ¤tpar;
3534 par->crsr.crsr_x = state->xoffset;
3535 par->crsr.crsr_y = state->yoffset;
3536 if ((cursormode = state->mode) == FB_CURSOR_OFF)
3542 static void ami_set_sprite(void)
3544 struct amifb_par *par = ¤tpar;
3545 copins *copl, *cops;
3550 cops = copdisplay.list[currentcop][0];
3551 copl = copdisplay.list[currentcop][1];
3552 ps = pl = ZTWO_PADDR(dummysprite);
3553 mx = par->crsr.crsr_x-par->crsr.spot_x;
3554 my = par->crsr.crsr_y-par->crsr.spot_y;
3555 if (!(par->vmode & FB_VMODE_YWRAP)) {
3559 if (!is_blanked && cursorstate > 0 && par->crsr.height > 0 &&
3560 mx > -(short)par->crsr.width && mx < par->xres &&
3561 my > -(short)par->crsr.height && my < par->yres) {
3562 pl = ZTWO_PADDR(lofsprite);
3563 hs = par->diwstrt_h + (mx<<par->clk_shift) - 4;
3564 vs = par->diwstrt_v + (my<<par->line_shift);
3565 ve = vs + (par->crsr.height<<par->line_shift);
3566 if (par->bplcon0 & BPC0_LACE) {
3567 ps = ZTWO_PADDR(shfsprite);
3568 lofsprite[0] = spr2hw_pos(vs, hs);
3569 shfsprite[0] = spr2hw_pos(vs+1, hs);
3571 lofsprite[1<<par->crsr.fmode] = spr2hw_ctl(vs, hs, ve);
3572 shfsprite[1<<par->crsr.fmode] = spr2hw_ctl(vs+1, hs, ve+1);
3573 pt = pl; pl = ps; ps = pt;
3575 lofsprite[1<<par->crsr.fmode] = spr2hw_ctl(vs, hs, ve+1);
3576 shfsprite[1<<par->crsr.fmode] = spr2hw_ctl(vs+1, hs, ve);
3579 lofsprite[0] = spr2hw_pos(vs, hs) | (IS_AGA && (par->fmode & FMODE_BSCAN2) ? 0x80 : 0);
3580 lofsprite[1<<par->crsr.fmode] = spr2hw_ctl(vs, hs, ve);
3583 copl[cop_spr0ptrh].w[1] = highw(pl);
3584 copl[cop_spr0ptrl].w[1] = loww(pl);
3585 if (par->bplcon0 & BPC0_LACE) {
3586 cops[cop_spr0ptrh].w[1] = highw(ps);
3587 cops[cop_spr0ptrl].w[1] = loww(ps);
3593 * Initialise the Copper Initialisation List
3596 static void __init ami_init_copper(void)
3598 copins *cop = copdisplay.init;
3603 (cop++)->l = CMOVE(BPC0_COLOR | BPC0_SHRES | BPC0_ECSENA, bplcon0);
3604 (cop++)->l = CMOVE(0x0181, diwstrt);
3605 (cop++)->l = CMOVE(0x0281, diwstop);
3606 (cop++)->l = CMOVE(0x0000, diwhigh);
3608 (cop++)->l = CMOVE(BPC0_COLOR, bplcon0);
3609 p = ZTWO_PADDR(dummysprite);
3610 for (i = 0; i < 8; i++) {
3611 (cop++)->l = CMOVE(0, spr[i].pos);
3612 (cop++)->l = CMOVE(highw(p), sprpt[i]);
3613 (cop++)->l = CMOVE2(loww(p), sprpt[i]);
3616 (cop++)->l = CMOVE(IF_SETCLR | IF_COPER, intreq);
3617 copdisplay.wait = cop;
3619 (cop++)->l = CMOVE(0, copjmp2);
3622 custom.cop1lc = (u_short *)ZTWO_PADDR(copdisplay.init);
3626 static void ami_reinit_copper(void)
3628 struct amifb_par *par = ¤tpar;
3630 copdisplay.init[cip_bplcon0].w[1] = ~(BPC0_BPU3 | BPC0_BPU2 | BPC0_BPU1 | BPC0_BPU0) & par->bplcon0;
3631 copdisplay.wait->l = CWAIT(32, par->diwstrt_v-4);
3635 * Build the Copper List
3638 static void ami_build_copper(void)
3640 struct amifb_par *par = ¤tpar;
3641 copins *copl, *cops;
3644 currentcop = 1 - currentcop;
3646 copl = copdisplay.list[currentcop][1];
3648 (copl++)->l = CWAIT(0, 10);
3649 (copl++)->l = CMOVE(par->bplcon0, bplcon0);
3650 (copl++)->l = CMOVE(0, sprpt[0]);
3651 (copl++)->l = CMOVE2(0, sprpt[0]);
3653 if (par->bplcon0 & BPC0_LACE) {
3654 cops = copdisplay.list[currentcop][0];
3656 (cops++)->l = CWAIT(0, 10);
3657 (cops++)->l = CMOVE(par->bplcon0, bplcon0);
3658 (cops++)->l = CMOVE(0, sprpt[0]);
3659 (cops++)->l = CMOVE2(0, sprpt[0]);
3661 (copl++)->l = CMOVE(diwstrt2hw(par->diwstrt_h, par->diwstrt_v+1), diwstrt);
3662 (copl++)->l = CMOVE(diwstop2hw(par->diwstop_h, par->diwstop_v+1), diwstop);
3663 (cops++)->l = CMOVE(diwstrt2hw(par->diwstrt_h, par->diwstrt_v), diwstrt);
3664 (cops++)->l = CMOVE(diwstop2hw(par->diwstop_h, par->diwstop_v), diwstop);
3666 (copl++)->l = CMOVE(diwhigh2hw(par->diwstrt_h, par->diwstrt_v+1,
3667 par->diwstop_h, par->diwstop_v+1), diwhigh);
3668 (cops++)->l = CMOVE(diwhigh2hw(par->diwstrt_h, par->diwstrt_v,
3669 par->diwstop_h, par->diwstop_v), diwhigh);
3671 if (par->beamcon0 & BMC0_VARBEAMEN) {
3672 (copl++)->l = CMOVE(vtotal2hw(par->vtotal), vtotal);
3673 (copl++)->l = CMOVE(vbstrt2hw(par->vbstrt+1), vbstrt);
3674 (copl++)->l = CMOVE(vbstop2hw(par->vbstop+1), vbstop);
3675 (cops++)->l = CMOVE(vtotal2hw(par->vtotal), vtotal);
3676 (cops++)->l = CMOVE(vbstrt2hw(par->vbstrt), vbstrt);
3677 (cops++)->l = CMOVE(vbstop2hw(par->vbstop), vbstop);
3681 p = ZTWO_PADDR(copdisplay.list[currentcop][0]);
3682 (copl++)->l = CMOVE(highw(p), cop2lc);
3683 (copl++)->l = CMOVE2(loww(p), cop2lc);
3684 p = ZTWO_PADDR(copdisplay.list[currentcop][1]);
3685 (cops++)->l = CMOVE(highw(p), cop2lc);
3686 (cops++)->l = CMOVE2(loww(p), cop2lc);
3687 copdisplay.rebuild[0] = cops;
3689 (copl++)->l = CMOVE(diwstrt2hw(par->diwstrt_h, par->diwstrt_v), diwstrt);
3690 (copl++)->l = CMOVE(diwstop2hw(par->diwstop_h, par->diwstop_v), diwstop);
3692 (copl++)->l = CMOVE(diwhigh2hw(par->diwstrt_h, par->diwstrt_v,
3693 par->diwstop_h, par->diwstop_v), diwhigh);
3695 if (par->beamcon0 & BMC0_VARBEAMEN) {
3696 (copl++)->l = CMOVE(vtotal2hw(par->vtotal), vtotal);
3697 (copl++)->l = CMOVE(vbstrt2hw(par->vbstrt), vbstrt);
3698 (copl++)->l = CMOVE(vbstop2hw(par->vbstop), vbstop);
3703 copdisplay.rebuild[1] = copl;
3706 ami_rebuild_copper();
3710 * Rebuild the Copper List
3712 * We only change the things that are not static
3715 static void ami_rebuild_copper(void)
3717 struct amifb_par *par = ¤tpar;
3718 copins *copl, *cops;
3719 u_short line, h_end1, h_end2;
3723 if (IS_AGA && maxfmode + par->clk_shift == 0)
3724 h_end1 = par->diwstrt_h-64;
3726 h_end1 = par->htotal-32;
3727 h_end2 = par->ddfstop+64;
3731 copl = copdisplay.rebuild[1];
3733 if (par->vmode & FB_VMODE_YWRAP) {
3734 if ((par->vyres-par->yoffset) != 1 || !mod2(par->diwstrt_v)) {
3735 if (par->yoffset > par->vyres-par->yres) {
3736 for (i = 0; i < (short)par->bpp; i++, p += par->next_plane) {
3737 (copl++)->l = CMOVE(highw(p), bplpt[i]);
3738 (copl++)->l = CMOVE2(loww(p), bplpt[i]);
3740 line = par->diwstrt_v + ((par->vyres-par->yoffset)<<par->line_shift) - 1;
3741 while (line >= 512) {
3742 (copl++)->l = CWAIT(h_end1, 510);
3745 if (line >= 510 && IS_AGA && maxfmode + par->clk_shift == 0)
3746 (copl++)->l = CWAIT(h_end1, line);
3748 (copl++)->l = CWAIT(h_end2, line);
3749 p = par->bplpt0wrap;
3751 } else p = par->bplpt0wrap;
3753 for (i = 0; i < (short)par->bpp; i++, p += par->next_plane) {
3754 (copl++)->l = CMOVE(highw(p), bplpt[i]);
3755 (copl++)->l = CMOVE2(loww(p), bplpt[i]);
3759 if (par->bplcon0 & BPC0_LACE) {
3760 cops = copdisplay.rebuild[0];
3762 if (mod2(par->diwstrt_v))
3763 p -= par->next_line;
3765 p += par->next_line;
3766 if (par->vmode & FB_VMODE_YWRAP) {
3767 if ((par->vyres-par->yoffset) != 1 || mod2(par->diwstrt_v)) {
3768 if (par->yoffset > par->vyres-par->yres+1) {
3769 for (i = 0; i < (short)par->bpp; i++, p += par->next_plane) {
3770 (cops++)->l = CMOVE(highw(p), bplpt[i]);
3771 (cops++)->l = CMOVE2(loww(p), bplpt[i]);
3773 line = par->diwstrt_v + ((par->vyres-par->yoffset)<<par->line_shift) - 2;
3774 while (line >= 512) {
3775 (cops++)->l = CWAIT(h_end1, 510);
3778 if (line > 510 && IS_AGA && maxfmode + par->clk_shift == 0)
3779 (cops++)->l = CWAIT(h_end1, line);
3781 (cops++)->l = CWAIT(h_end2, line);
3782 p = par->bplpt0wrap;
3783 if (mod2(par->diwstrt_v+par->vyres-par->yoffset))
3784 p -= par->next_line;
3786 p += par->next_line;
3788 } else p = par->bplpt0wrap - par->next_line;
3790 for (i = 0; i < (short)par->bpp; i++, p += par->next_plane) {
3791 (cops++)->l = CMOVE(highw(p), bplpt[i]);
3792 (cops++)->l = CMOVE2(loww(p), bplpt[i]);
3799 module_init(amifb_init);
3802 MODULE_LICENSE("GPL");
3804 void cleanup_module(void)
3806 unregister_framebuffer(&fb_info);